1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #define TPACPI_VERSION "0.26" 12 #define TPACPI_SYSFS_VERSION 0x030000 13 14 /* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37 #include <linux/kernel.h> 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/types.h> 41 #include <linux/string.h> 42 #include <linux/list.h> 43 #include <linux/mutex.h> 44 #include <linux/sched.h> 45 #include <linux/sched/signal.h> 46 #include <linux/kthread.h> 47 #include <linux/freezer.h> 48 #include <linux/delay.h> 49 #include <linux/slab.h> 50 #include <linux/nvram.h> 51 #include <linux/proc_fs.h> 52 #include <linux/seq_file.h> 53 #include <linux/sysfs.h> 54 #include <linux/backlight.h> 55 #include <linux/bitops.h> 56 #include <linux/fb.h> 57 #include <linux/platform_device.h> 58 #include <linux/hwmon.h> 59 #include <linux/hwmon-sysfs.h> 60 #include <linux/input.h> 61 #include <linux/leds.h> 62 #include <linux/rfkill.h> 63 #include <linux/dmi.h> 64 #include <linux/jiffies.h> 65 #include <linux/workqueue.h> 66 #include <linux/acpi.h> 67 #include <linux/pci.h> 68 #include <linux/power_supply.h> 69 #include <linux/platform_profile.h> 70 #include <sound/core.h> 71 #include <sound/control.h> 72 #include <sound/initval.h> 73 #include <linux/uaccess.h> 74 #include <acpi/battery.h> 75 #include <acpi/video.h> 76 #include "dual_accel_detect.h" 77 78 /* ThinkPad CMOS commands */ 79 #define TP_CMOS_VOLUME_DOWN 0 80 #define TP_CMOS_VOLUME_UP 1 81 #define TP_CMOS_VOLUME_MUTE 2 82 #define TP_CMOS_BRIGHTNESS_UP 4 83 #define TP_CMOS_BRIGHTNESS_DOWN 5 84 #define TP_CMOS_THINKLIGHT_ON 12 85 #define TP_CMOS_THINKLIGHT_OFF 13 86 87 /* NVRAM Addresses */ 88 enum tp_nvram_addr { 89 TP_NVRAM_ADDR_HK2 = 0x57, 90 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 91 TP_NVRAM_ADDR_VIDEO = 0x59, 92 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 93 TP_NVRAM_ADDR_MIXER = 0x60, 94 }; 95 96 /* NVRAM bit masks */ 97 enum { 98 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 99 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 100 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 101 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 102 TP_NVRAM_MASK_THINKLIGHT = 0x10, 103 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 104 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 105 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 106 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 107 TP_NVRAM_MASK_MUTE = 0x40, 108 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 109 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 110 TP_NVRAM_POS_LEVEL_VOLUME = 0, 111 }; 112 113 /* Misc NVRAM-related */ 114 enum { 115 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 116 }; 117 118 /* ACPI HIDs */ 119 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 120 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 121 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 122 #define TPACPI_ACPI_EC_HID "PNP0C09" 123 124 /* Input IDs */ 125 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 126 #define TPACPI_HKEY_INPUT_VERSION 0x4101 127 128 /* ACPI \WGSV commands */ 129 enum { 130 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 131 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 132 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 133 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 134 }; 135 136 /* TP_ACPI_WGSV_GET_STATE bits */ 137 enum { 138 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 139 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 140 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 141 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 142 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 143 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 144 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 145 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 146 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 147 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 148 }; 149 150 /* HKEY events */ 151 enum tpacpi_hkey_event_t { 152 /* Hotkey-related */ 153 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 154 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 155 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 156 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 157 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 158 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 159 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 160 161 /* Reasons for waking up from S3/S4 */ 162 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 163 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 164 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 165 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 166 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 167 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 168 169 /* Auto-sleep after eject request */ 170 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 171 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 172 173 /* Misc bay events */ 174 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 175 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 176 or port replicator */ 177 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 178 dock or port replicator */ 179 /* 180 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 181 * when keyboard cover is attached, detached or folded onto the back 182 */ 183 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 184 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 185 186 /* User-interface events */ 187 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 188 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 189 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 190 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 191 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 192 * enter/leave tablet mode 193 */ 194 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 195 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 196 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 197 198 /* Key-related user-interface events */ 199 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 200 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 201 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 202 203 /* Thermal events */ 204 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 205 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 206 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 207 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 208 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 209 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 210 * command completed. Related to 211 * AML DYTC */ 212 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 213 * changed. Related to AML GMTS */ 214 215 /* AC-related events */ 216 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 217 218 /* Further user-interface events */ 219 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 220 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 221 222 /* Misc */ 223 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 224 }; 225 226 /**************************************************************************** 227 * Main driver 228 */ 229 230 #define TPACPI_NAME "thinkpad" 231 #define TPACPI_DESC "ThinkPad ACPI Extras" 232 #define TPACPI_FILE TPACPI_NAME "_acpi" 233 #define TPACPI_URL "http://ibm-acpi.sf.net/" 234 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 235 236 #define TPACPI_PROC_DIR "ibm" 237 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 238 #define TPACPI_DRVR_NAME TPACPI_FILE 239 #define TPACPI_DRVR_SHORTNAME "tpacpi" 240 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 241 242 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 243 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 244 245 #define TPACPI_MAX_ACPI_ARGS 3 246 247 /* Debugging printk groups */ 248 #define TPACPI_DBG_ALL 0xffff 249 #define TPACPI_DBG_DISCLOSETASK 0x8000 250 #define TPACPI_DBG_INIT 0x0001 251 #define TPACPI_DBG_EXIT 0x0002 252 #define TPACPI_DBG_RFKILL 0x0004 253 #define TPACPI_DBG_HKEY 0x0008 254 #define TPACPI_DBG_FAN 0x0010 255 #define TPACPI_DBG_BRGHT 0x0020 256 #define TPACPI_DBG_MIXER 0x0040 257 258 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 259 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 260 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 261 262 263 /**************************************************************************** 264 * Driver-wide structs and misc. variables 265 */ 266 267 struct ibm_struct; 268 269 struct tp_acpi_drv_struct { 270 const struct acpi_device_id *hid; 271 struct acpi_driver *driver; 272 273 void (*notify) (struct ibm_struct *, u32); 274 acpi_handle *handle; 275 u32 type; 276 struct acpi_device *device; 277 }; 278 279 struct ibm_struct { 280 char *name; 281 282 int (*read) (struct seq_file *); 283 int (*write) (char *); 284 void (*exit) (void); 285 void (*resume) (void); 286 void (*suspend) (void); 287 void (*shutdown) (void); 288 289 struct list_head all_drivers; 290 291 struct tp_acpi_drv_struct *acpi; 292 293 struct { 294 u8 acpi_driver_registered:1; 295 u8 acpi_notify_installed:1; 296 u8 proc_created:1; 297 u8 init_called:1; 298 u8 experimental:1; 299 } flags; 300 }; 301 302 struct ibm_init_struct { 303 char param[32]; 304 305 int (*init) (struct ibm_init_struct *); 306 umode_t base_procfs_mode; 307 struct ibm_struct *data; 308 }; 309 310 static struct { 311 u32 bluetooth:1; 312 u32 hotkey:1; 313 u32 hotkey_mask:1; 314 u32 hotkey_wlsw:1; 315 enum { 316 TP_HOTKEY_TABLET_NONE = 0, 317 TP_HOTKEY_TABLET_USES_MHKG, 318 TP_HOTKEY_TABLET_USES_GMMS, 319 } hotkey_tablet; 320 u32 kbdlight:1; 321 u32 light:1; 322 u32 light_status:1; 323 u32 bright_acpimode:1; 324 u32 bright_unkfw:1; 325 u32 wan:1; 326 u32 uwb:1; 327 u32 fan_ctrl_status_undef:1; 328 u32 second_fan:1; 329 u32 second_fan_ctl:1; 330 u32 beep_needs_two_args:1; 331 u32 mixer_no_level_control:1; 332 u32 battery_force_primary:1; 333 u32 input_device_registered:1; 334 u32 platform_drv_registered:1; 335 u32 platform_drv_attrs_registered:1; 336 u32 sensors_pdrv_registered:1; 337 u32 sensors_pdrv_attrs_registered:1; 338 u32 sensors_pdev_attrs_registered:1; 339 u32 hotkey_poll_active:1; 340 u32 has_adaptive_kbd:1; 341 } tp_features; 342 343 static struct { 344 u16 hotkey_mask_ff:1; 345 u16 volume_ctrl_forbidden:1; 346 } tp_warned; 347 348 struct thinkpad_id_data { 349 unsigned int vendor; /* ThinkPad vendor: 350 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 351 352 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 353 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 354 355 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 356 u32 ec_model; 357 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 358 u16 ec_release; 359 360 char *model_str; /* ThinkPad T43 */ 361 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 362 }; 363 static struct thinkpad_id_data thinkpad_id; 364 365 static enum { 366 TPACPI_LIFE_INIT = 0, 367 TPACPI_LIFE_RUNNING, 368 TPACPI_LIFE_EXITING, 369 } tpacpi_lifecycle; 370 371 static int experimental; 372 static u32 dbg_level; 373 374 static struct workqueue_struct *tpacpi_wq; 375 376 enum led_status_t { 377 TPACPI_LED_OFF = 0, 378 TPACPI_LED_ON, 379 TPACPI_LED_BLINK, 380 }; 381 382 /* tpacpi LED class */ 383 struct tpacpi_led_classdev { 384 struct led_classdev led_classdev; 385 int led; 386 }; 387 388 /* brightness level capabilities */ 389 static unsigned int bright_maxlvl; /* 0 = unknown */ 390 391 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 392 static int dbg_wlswemul; 393 static bool tpacpi_wlsw_emulstate; 394 static int dbg_bluetoothemul; 395 static bool tpacpi_bluetooth_emulstate; 396 static int dbg_wwanemul; 397 static bool tpacpi_wwan_emulstate; 398 static int dbg_uwbemul; 399 static bool tpacpi_uwb_emulstate; 400 #endif 401 402 403 /************************************************************************* 404 * Debugging helpers 405 */ 406 407 #define dbg_printk(a_dbg_level, format, arg...) \ 408 do { \ 409 if (dbg_level & (a_dbg_level)) \ 410 printk(KERN_DEBUG pr_fmt("%s: " format), \ 411 __func__, ##arg); \ 412 } while (0) 413 414 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 415 #define vdbg_printk dbg_printk 416 static const char *str_supported(int is_supported); 417 #else 418 static inline const char *str_supported(int is_supported) { return ""; } 419 #define vdbg_printk(a_dbg_level, format, arg...) \ 420 do { if (0) no_printk(format, ##arg); } while (0) 421 #endif 422 423 static void tpacpi_log_usertask(const char * const what) 424 { 425 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 426 what, task_tgid_vnr(current)); 427 } 428 429 #define tpacpi_disclose_usertask(what, format, arg...) \ 430 do { \ 431 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 432 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 433 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 434 what, task_tgid_vnr(current), ## arg); \ 435 } \ 436 } while (0) 437 438 /* 439 * Quirk handling helpers 440 * 441 * ThinkPad IDs and versions seen in the field so far are 442 * two or three characters from the set [0-9A-Z], i.e. base 36. 443 * 444 * We use values well outside that range as specials. 445 */ 446 447 #define TPACPI_MATCH_ANY 0xffffffffU 448 #define TPACPI_MATCH_ANY_VERSION 0xffffU 449 #define TPACPI_MATCH_UNKNOWN 0U 450 451 /* TPID('1', 'Y') == 0x3159 */ 452 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 453 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 454 #define TPVER TPID 455 456 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 457 { .vendor = PCI_VENDOR_ID_IBM, \ 458 .bios = TPID(__id1, __id2), \ 459 .ec = TPACPI_MATCH_ANY, \ 460 .quirks = (__quirk) } 461 462 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 463 { .vendor = PCI_VENDOR_ID_LENOVO, \ 464 .bios = TPID(__id1, __id2), \ 465 .ec = TPACPI_MATCH_ANY, \ 466 .quirks = (__quirk) } 467 468 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 469 { .vendor = PCI_VENDOR_ID_LENOVO, \ 470 .bios = TPID3(__id1, __id2, __id3), \ 471 .ec = TPACPI_MATCH_ANY, \ 472 .quirks = (__quirk) } 473 474 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 475 { .vendor = PCI_VENDOR_ID_IBM, \ 476 .bios = TPACPI_MATCH_ANY, \ 477 .ec = TPID(__id1, __id2), \ 478 .quirks = (__quirk) } 479 480 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 481 { .vendor = PCI_VENDOR_ID_LENOVO, \ 482 .bios = TPACPI_MATCH_ANY, \ 483 .ec = TPID(__id1, __id2), \ 484 .quirks = (__quirk) } 485 486 struct tpacpi_quirk { 487 unsigned int vendor; 488 u32 bios; 489 u32 ec; 490 unsigned long quirks; 491 }; 492 493 /** 494 * tpacpi_check_quirks() - search BIOS/EC version on a list 495 * @qlist: array of &struct tpacpi_quirk 496 * @qlist_size: number of elements in @qlist 497 * 498 * Iterates over a quirks list until one is found that matches the 499 * ThinkPad's vendor, BIOS and EC model. 500 * 501 * Returns 0 if nothing matches, otherwise returns the quirks field of 502 * the matching &struct tpacpi_quirk entry. 503 * 504 * The match criteria is: vendor, ec and bios much match. 505 */ 506 static unsigned long __init tpacpi_check_quirks( 507 const struct tpacpi_quirk *qlist, 508 unsigned int qlist_size) 509 { 510 while (qlist_size) { 511 if ((qlist->vendor == thinkpad_id.vendor || 512 qlist->vendor == TPACPI_MATCH_ANY) && 513 (qlist->bios == thinkpad_id.bios_model || 514 qlist->bios == TPACPI_MATCH_ANY) && 515 (qlist->ec == thinkpad_id.ec_model || 516 qlist->ec == TPACPI_MATCH_ANY)) 517 return qlist->quirks; 518 519 qlist_size--; 520 qlist++; 521 } 522 return 0; 523 } 524 525 static inline bool __pure __init tpacpi_is_lenovo(void) 526 { 527 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 528 } 529 530 static inline bool __pure __init tpacpi_is_ibm(void) 531 { 532 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 533 } 534 535 /**************************************************************************** 536 **************************************************************************** 537 * 538 * ACPI Helpers and device model 539 * 540 **************************************************************************** 541 ****************************************************************************/ 542 543 /************************************************************************* 544 * ACPI basic handles 545 */ 546 547 static acpi_handle root_handle; 548 static acpi_handle ec_handle; 549 550 #define TPACPI_HANDLE(object, parent, paths...) \ 551 static acpi_handle object##_handle; \ 552 static const acpi_handle * const object##_parent __initconst = \ 553 &parent##_handle; \ 554 static char *object##_paths[] __initdata = { paths } 555 556 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 557 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 558 559 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 560 /* T4x, X31, X40 */ 561 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 562 "\\CMS", /* R40, R40e */ 563 ); /* all others */ 564 565 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 566 "^HKEY", /* R30, R31 */ 567 "HKEY", /* all others */ 568 ); /* 570 */ 569 570 /************************************************************************* 571 * ACPI helpers 572 */ 573 574 static int acpi_evalf(acpi_handle handle, 575 int *res, char *method, char *fmt, ...) 576 { 577 char *fmt0 = fmt; 578 struct acpi_object_list params; 579 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 580 struct acpi_buffer result, *resultp; 581 union acpi_object out_obj; 582 acpi_status status; 583 va_list ap; 584 char res_type; 585 int success; 586 int quiet; 587 588 if (!*fmt) { 589 pr_err("acpi_evalf() called with empty format\n"); 590 return 0; 591 } 592 593 if (*fmt == 'q') { 594 quiet = 1; 595 fmt++; 596 } else 597 quiet = 0; 598 599 res_type = *(fmt++); 600 601 params.count = 0; 602 params.pointer = &in_objs[0]; 603 604 va_start(ap, fmt); 605 while (*fmt) { 606 char c = *(fmt++); 607 switch (c) { 608 case 'd': /* int */ 609 in_objs[params.count].integer.value = va_arg(ap, int); 610 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 611 break; 612 /* add more types as needed */ 613 default: 614 pr_err("acpi_evalf() called with invalid format character '%c'\n", 615 c); 616 va_end(ap); 617 return 0; 618 } 619 } 620 va_end(ap); 621 622 if (res_type != 'v') { 623 result.length = sizeof(out_obj); 624 result.pointer = &out_obj; 625 resultp = &result; 626 } else 627 resultp = NULL; 628 629 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 630 631 switch (res_type) { 632 case 'd': /* int */ 633 success = (status == AE_OK && 634 out_obj.type == ACPI_TYPE_INTEGER); 635 if (success && res) 636 *res = out_obj.integer.value; 637 break; 638 case 'v': /* void */ 639 success = status == AE_OK; 640 break; 641 /* add more types as needed */ 642 default: 643 pr_err("acpi_evalf() called with invalid format character '%c'\n", 644 res_type); 645 return 0; 646 } 647 648 if (!success && !quiet) 649 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 650 method, fmt0, acpi_format_exception(status)); 651 652 return success; 653 } 654 655 static int acpi_ec_read(int i, u8 *p) 656 { 657 int v; 658 659 if (ecrd_handle) { 660 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 661 return 0; 662 *p = v; 663 } else { 664 if (ec_read(i, p) < 0) 665 return 0; 666 } 667 668 return 1; 669 } 670 671 static int acpi_ec_write(int i, u8 v) 672 { 673 if (ecwr_handle) { 674 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 675 return 0; 676 } else { 677 if (ec_write(i, v) < 0) 678 return 0; 679 } 680 681 return 1; 682 } 683 684 static int issue_thinkpad_cmos_command(int cmos_cmd) 685 { 686 if (!cmos_handle) 687 return -ENXIO; 688 689 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 690 return -EIO; 691 692 return 0; 693 } 694 695 /************************************************************************* 696 * ACPI device model 697 */ 698 699 #define TPACPI_ACPIHANDLE_INIT(object) \ 700 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 701 object##_paths, ARRAY_SIZE(object##_paths)) 702 703 static void __init drv_acpi_handle_init(const char *name, 704 acpi_handle *handle, const acpi_handle parent, 705 char **paths, const int num_paths) 706 { 707 int i; 708 acpi_status status; 709 710 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 711 name); 712 713 for (i = 0; i < num_paths; i++) { 714 status = acpi_get_handle(parent, paths[i], handle); 715 if (ACPI_SUCCESS(status)) { 716 dbg_printk(TPACPI_DBG_INIT, 717 "Found ACPI handle %s for %s\n", 718 paths[i], name); 719 return; 720 } 721 } 722 723 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 724 name); 725 *handle = NULL; 726 } 727 728 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 729 u32 level, void *context, void **return_value) 730 { 731 struct acpi_device *dev; 732 if (!strcmp(context, "video")) { 733 if (acpi_bus_get_device(handle, &dev)) 734 return AE_OK; 735 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 736 return AE_OK; 737 } 738 739 *(acpi_handle *)return_value = handle; 740 741 return AE_CTRL_TERMINATE; 742 } 743 744 static void __init tpacpi_acpi_handle_locate(const char *name, 745 const char *hid, 746 acpi_handle *handle) 747 { 748 acpi_status status; 749 acpi_handle device_found; 750 751 BUG_ON(!name || !handle); 752 vdbg_printk(TPACPI_DBG_INIT, 753 "trying to locate ACPI handle for %s, using HID %s\n", 754 name, hid ? hid : "NULL"); 755 756 memset(&device_found, 0, sizeof(device_found)); 757 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 758 (void *)name, &device_found); 759 760 *handle = NULL; 761 762 if (ACPI_SUCCESS(status)) { 763 *handle = device_found; 764 dbg_printk(TPACPI_DBG_INIT, 765 "Found ACPI handle for %s\n", name); 766 } else { 767 vdbg_printk(TPACPI_DBG_INIT, 768 "Could not locate an ACPI handle for %s: %s\n", 769 name, acpi_format_exception(status)); 770 } 771 } 772 773 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 774 { 775 struct ibm_struct *ibm = data; 776 777 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 778 return; 779 780 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 781 return; 782 783 ibm->acpi->notify(ibm, event); 784 } 785 786 static int __init setup_acpi_notify(struct ibm_struct *ibm) 787 { 788 acpi_status status; 789 int rc; 790 791 BUG_ON(!ibm->acpi); 792 793 if (!*ibm->acpi->handle) 794 return 0; 795 796 vdbg_printk(TPACPI_DBG_INIT, 797 "setting up ACPI notify for %s\n", ibm->name); 798 799 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 800 if (rc < 0) { 801 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 802 return -ENODEV; 803 } 804 805 ibm->acpi->device->driver_data = ibm; 806 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 807 TPACPI_ACPI_EVENT_PREFIX, 808 ibm->name); 809 810 status = acpi_install_notify_handler(*ibm->acpi->handle, 811 ibm->acpi->type, dispatch_acpi_notify, ibm); 812 if (ACPI_FAILURE(status)) { 813 if (status == AE_ALREADY_EXISTS) { 814 pr_notice("another device driver is already handling %s events\n", 815 ibm->name); 816 } else { 817 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 818 ibm->name, acpi_format_exception(status)); 819 } 820 return -ENODEV; 821 } 822 ibm->flags.acpi_notify_installed = 1; 823 return 0; 824 } 825 826 static int __init tpacpi_device_add(struct acpi_device *device) 827 { 828 return 0; 829 } 830 831 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 832 { 833 int rc; 834 835 dbg_printk(TPACPI_DBG_INIT, 836 "registering %s as an ACPI driver\n", ibm->name); 837 838 BUG_ON(!ibm->acpi); 839 840 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 841 if (!ibm->acpi->driver) { 842 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 843 return -ENOMEM; 844 } 845 846 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 847 ibm->acpi->driver->ids = ibm->acpi->hid; 848 849 ibm->acpi->driver->ops.add = &tpacpi_device_add; 850 851 rc = acpi_bus_register_driver(ibm->acpi->driver); 852 if (rc < 0) { 853 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 854 ibm->name, rc); 855 kfree(ibm->acpi->driver); 856 ibm->acpi->driver = NULL; 857 } else if (!rc) 858 ibm->flags.acpi_driver_registered = 1; 859 860 return rc; 861 } 862 863 864 /**************************************************************************** 865 **************************************************************************** 866 * 867 * Procfs Helpers 868 * 869 **************************************************************************** 870 ****************************************************************************/ 871 872 static int dispatch_proc_show(struct seq_file *m, void *v) 873 { 874 struct ibm_struct *ibm = m->private; 875 876 if (!ibm || !ibm->read) 877 return -EINVAL; 878 return ibm->read(m); 879 } 880 881 static int dispatch_proc_open(struct inode *inode, struct file *file) 882 { 883 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 884 } 885 886 static ssize_t dispatch_proc_write(struct file *file, 887 const char __user *userbuf, 888 size_t count, loff_t *pos) 889 { 890 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 891 char *kernbuf; 892 int ret; 893 894 if (!ibm || !ibm->write) 895 return -EINVAL; 896 if (count > PAGE_SIZE - 1) 897 return -EINVAL; 898 899 kernbuf = kmalloc(count + 1, GFP_KERNEL); 900 if (!kernbuf) 901 return -ENOMEM; 902 903 if (copy_from_user(kernbuf, userbuf, count)) { 904 kfree(kernbuf); 905 return -EFAULT; 906 } 907 908 kernbuf[count] = 0; 909 ret = ibm->write(kernbuf); 910 if (ret == 0) 911 ret = count; 912 913 kfree(kernbuf); 914 915 return ret; 916 } 917 918 static const struct proc_ops dispatch_proc_ops = { 919 .proc_open = dispatch_proc_open, 920 .proc_read = seq_read, 921 .proc_lseek = seq_lseek, 922 .proc_release = single_release, 923 .proc_write = dispatch_proc_write, 924 }; 925 926 /**************************************************************************** 927 **************************************************************************** 928 * 929 * Device model: input, hwmon and platform 930 * 931 **************************************************************************** 932 ****************************************************************************/ 933 934 static struct platform_device *tpacpi_pdev; 935 static struct platform_device *tpacpi_sensors_pdev; 936 static struct device *tpacpi_hwmon; 937 static struct input_dev *tpacpi_inputdev; 938 static struct mutex tpacpi_inputdev_send_mutex; 939 static LIST_HEAD(tpacpi_all_drivers); 940 941 #ifdef CONFIG_PM_SLEEP 942 static int tpacpi_suspend_handler(struct device *dev) 943 { 944 struct ibm_struct *ibm, *itmp; 945 946 list_for_each_entry_safe(ibm, itmp, 947 &tpacpi_all_drivers, 948 all_drivers) { 949 if (ibm->suspend) 950 (ibm->suspend)(); 951 } 952 953 return 0; 954 } 955 956 static int tpacpi_resume_handler(struct device *dev) 957 { 958 struct ibm_struct *ibm, *itmp; 959 960 list_for_each_entry_safe(ibm, itmp, 961 &tpacpi_all_drivers, 962 all_drivers) { 963 if (ibm->resume) 964 (ibm->resume)(); 965 } 966 967 return 0; 968 } 969 #endif 970 971 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 972 tpacpi_suspend_handler, tpacpi_resume_handler); 973 974 static void tpacpi_shutdown_handler(struct platform_device *pdev) 975 { 976 struct ibm_struct *ibm, *itmp; 977 978 list_for_each_entry_safe(ibm, itmp, 979 &tpacpi_all_drivers, 980 all_drivers) { 981 if (ibm->shutdown) 982 (ibm->shutdown)(); 983 } 984 } 985 986 static struct platform_driver tpacpi_pdriver = { 987 .driver = { 988 .name = TPACPI_DRVR_NAME, 989 .pm = &tpacpi_pm, 990 }, 991 .shutdown = tpacpi_shutdown_handler, 992 }; 993 994 static struct platform_driver tpacpi_hwmon_pdriver = { 995 .driver = { 996 .name = TPACPI_HWMON_DRVR_NAME, 997 }, 998 }; 999 1000 /************************************************************************* 1001 * sysfs support helpers 1002 */ 1003 1004 struct attribute_set { 1005 unsigned int members, max_members; 1006 struct attribute_group group; 1007 }; 1008 1009 struct attribute_set_obj { 1010 struct attribute_set s; 1011 struct attribute *a; 1012 } __attribute__((packed)); 1013 1014 static struct attribute_set *create_attr_set(unsigned int max_members, 1015 const char *name) 1016 { 1017 struct attribute_set_obj *sobj; 1018 1019 if (max_members == 0) 1020 return NULL; 1021 1022 /* Allocates space for implicit NULL at the end too */ 1023 sobj = kzalloc(sizeof(struct attribute_set_obj) + 1024 max_members * sizeof(struct attribute *), 1025 GFP_KERNEL); 1026 if (!sobj) 1027 return NULL; 1028 sobj->s.max_members = max_members; 1029 sobj->s.group.attrs = &sobj->a; 1030 sobj->s.group.name = name; 1031 1032 return &sobj->s; 1033 } 1034 1035 #define destroy_attr_set(_set) \ 1036 kfree(_set) 1037 1038 /* not multi-threaded safe, use it in a single thread per set */ 1039 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 1040 { 1041 if (!s || !attr) 1042 return -EINVAL; 1043 1044 if (s->members >= s->max_members) 1045 return -ENOMEM; 1046 1047 s->group.attrs[s->members] = attr; 1048 s->members++; 1049 1050 return 0; 1051 } 1052 1053 static int add_many_to_attr_set(struct attribute_set *s, 1054 struct attribute **attr, 1055 unsigned int count) 1056 { 1057 int i, res; 1058 1059 for (i = 0; i < count; i++) { 1060 res = add_to_attr_set(s, attr[i]); 1061 if (res) 1062 return res; 1063 } 1064 1065 return 0; 1066 } 1067 1068 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 1069 { 1070 sysfs_remove_group(kobj, &s->group); 1071 destroy_attr_set(s); 1072 } 1073 1074 #define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1075 sysfs_create_group(_kobj, &_attr_set->group) 1076 1077 static int parse_strtoul(const char *buf, 1078 unsigned long max, unsigned long *value) 1079 { 1080 char *endp; 1081 1082 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1083 endp = skip_spaces(endp); 1084 if (*endp || *value > max) 1085 return -EINVAL; 1086 1087 return 0; 1088 } 1089 1090 static void tpacpi_disable_brightness_delay(void) 1091 { 1092 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1093 pr_notice("ACPI backlight control delay disabled\n"); 1094 } 1095 1096 static void printk_deprecated_attribute(const char * const what, 1097 const char * const details) 1098 { 1099 tpacpi_log_usertask("deprecated sysfs attribute"); 1100 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1101 what, details); 1102 } 1103 1104 /************************************************************************* 1105 * rfkill and radio control support helpers 1106 */ 1107 1108 /* 1109 * ThinkPad-ACPI firmware handling model: 1110 * 1111 * WLSW (master wireless switch) is event-driven, and is common to all 1112 * firmware-controlled radios. It cannot be controlled, just monitored, 1113 * as expected. It overrides all radio state in firmware 1114 * 1115 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1116 * (TODO: verify how WLSW interacts with the returned radio state). 1117 * 1118 * The only time there are shadow radio state changes, is when 1119 * masked-off hotkeys are used. 1120 */ 1121 1122 /* 1123 * Internal driver API for radio state: 1124 * 1125 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1126 * bool: true means radio blocked (off) 1127 */ 1128 enum tpacpi_rfkill_state { 1129 TPACPI_RFK_RADIO_OFF = 0, 1130 TPACPI_RFK_RADIO_ON 1131 }; 1132 1133 /* rfkill switches */ 1134 enum tpacpi_rfk_id { 1135 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1136 TPACPI_RFK_WWAN_SW_ID, 1137 TPACPI_RFK_UWB_SW_ID, 1138 TPACPI_RFK_SW_MAX 1139 }; 1140 1141 static const char *tpacpi_rfkill_names[] = { 1142 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1143 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1144 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1145 [TPACPI_RFK_SW_MAX] = NULL 1146 }; 1147 1148 /* ThinkPad-ACPI rfkill subdriver */ 1149 struct tpacpi_rfk { 1150 struct rfkill *rfkill; 1151 enum tpacpi_rfk_id id; 1152 const struct tpacpi_rfk_ops *ops; 1153 }; 1154 1155 struct tpacpi_rfk_ops { 1156 /* firmware interface */ 1157 int (*get_status)(void); 1158 int (*set_status)(const enum tpacpi_rfkill_state); 1159 }; 1160 1161 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1162 1163 /* Query FW and update rfkill sw state for a given rfkill switch */ 1164 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1165 { 1166 int status; 1167 1168 if (!tp_rfk) 1169 return -ENODEV; 1170 1171 status = (tp_rfk->ops->get_status)(); 1172 if (status < 0) 1173 return status; 1174 1175 rfkill_set_sw_state(tp_rfk->rfkill, 1176 (status == TPACPI_RFK_RADIO_OFF)); 1177 1178 return status; 1179 } 1180 1181 /* Query FW and update rfkill sw state for all rfkill switches */ 1182 static void tpacpi_rfk_update_swstate_all(void) 1183 { 1184 unsigned int i; 1185 1186 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1187 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1188 } 1189 1190 /* 1191 * Sync the HW-blocking state of all rfkill switches, 1192 * do notice it causes the rfkill core to schedule uevents 1193 */ 1194 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1195 { 1196 unsigned int i; 1197 struct tpacpi_rfk *tp_rfk; 1198 1199 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1200 tp_rfk = tpacpi_rfkill_switches[i]; 1201 if (tp_rfk) { 1202 if (rfkill_set_hw_state(tp_rfk->rfkill, 1203 blocked)) { 1204 /* ignore -- we track sw block */ 1205 } 1206 } 1207 } 1208 } 1209 1210 /* Call to get the WLSW state from the firmware */ 1211 static int hotkey_get_wlsw(void); 1212 1213 /* Call to query WLSW state and update all rfkill switches */ 1214 static bool tpacpi_rfk_check_hwblock_state(void) 1215 { 1216 int res = hotkey_get_wlsw(); 1217 int hw_blocked; 1218 1219 /* When unknown or unsupported, we have to assume it is unblocked */ 1220 if (res < 0) 1221 return false; 1222 1223 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1224 tpacpi_rfk_update_hwblock_state(hw_blocked); 1225 1226 return hw_blocked; 1227 } 1228 1229 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1230 { 1231 struct tpacpi_rfk *tp_rfk = data; 1232 int res; 1233 1234 dbg_printk(TPACPI_DBG_RFKILL, 1235 "request to change radio state to %s\n", 1236 blocked ? "blocked" : "unblocked"); 1237 1238 /* try to set radio state */ 1239 res = (tp_rfk->ops->set_status)(blocked ? 1240 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1241 1242 /* and update the rfkill core with whatever the FW really did */ 1243 tpacpi_rfk_update_swstate(tp_rfk); 1244 1245 return (res < 0) ? res : 0; 1246 } 1247 1248 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1249 .set_block = tpacpi_rfk_hook_set_block, 1250 }; 1251 1252 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1253 const struct tpacpi_rfk_ops *tp_rfkops, 1254 const enum rfkill_type rfktype, 1255 const char *name, 1256 const bool set_default) 1257 { 1258 struct tpacpi_rfk *atp_rfk; 1259 int res; 1260 bool sw_state = false; 1261 bool hw_state; 1262 int sw_status; 1263 1264 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1265 1266 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1267 if (atp_rfk) 1268 atp_rfk->rfkill = rfkill_alloc(name, 1269 &tpacpi_pdev->dev, 1270 rfktype, 1271 &tpacpi_rfk_rfkill_ops, 1272 atp_rfk); 1273 if (!atp_rfk || !atp_rfk->rfkill) { 1274 pr_err("failed to allocate memory for rfkill class\n"); 1275 kfree(atp_rfk); 1276 return -ENOMEM; 1277 } 1278 1279 atp_rfk->id = id; 1280 atp_rfk->ops = tp_rfkops; 1281 1282 sw_status = (tp_rfkops->get_status)(); 1283 if (sw_status < 0) { 1284 pr_err("failed to read initial state for %s, error %d\n", 1285 name, sw_status); 1286 } else { 1287 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1288 if (set_default) { 1289 /* try to keep the initial state, since we ask the 1290 * firmware to preserve it across S5 in NVRAM */ 1291 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1292 } 1293 } 1294 hw_state = tpacpi_rfk_check_hwblock_state(); 1295 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1296 1297 res = rfkill_register(atp_rfk->rfkill); 1298 if (res < 0) { 1299 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1300 rfkill_destroy(atp_rfk->rfkill); 1301 kfree(atp_rfk); 1302 return res; 1303 } 1304 1305 tpacpi_rfkill_switches[id] = atp_rfk; 1306 1307 pr_info("rfkill switch %s: radio is %sblocked\n", 1308 name, (sw_state || hw_state) ? "" : "un"); 1309 return 0; 1310 } 1311 1312 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1313 { 1314 struct tpacpi_rfk *tp_rfk; 1315 1316 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1317 1318 tp_rfk = tpacpi_rfkill_switches[id]; 1319 if (tp_rfk) { 1320 rfkill_unregister(tp_rfk->rfkill); 1321 rfkill_destroy(tp_rfk->rfkill); 1322 tpacpi_rfkill_switches[id] = NULL; 1323 kfree(tp_rfk); 1324 } 1325 } 1326 1327 static void printk_deprecated_rfkill_attribute(const char * const what) 1328 { 1329 printk_deprecated_attribute(what, 1330 "Please switch to generic rfkill before year 2010"); 1331 } 1332 1333 /* sysfs <radio> enable ------------------------------------------------ */ 1334 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1335 struct device_attribute *attr, 1336 char *buf) 1337 { 1338 int status; 1339 1340 printk_deprecated_rfkill_attribute(attr->attr.name); 1341 1342 /* This is in the ABI... */ 1343 if (tpacpi_rfk_check_hwblock_state()) { 1344 status = TPACPI_RFK_RADIO_OFF; 1345 } else { 1346 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1347 if (status < 0) 1348 return status; 1349 } 1350 1351 return snprintf(buf, PAGE_SIZE, "%d\n", 1352 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1353 } 1354 1355 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1356 struct device_attribute *attr, 1357 const char *buf, size_t count) 1358 { 1359 unsigned long t; 1360 int res; 1361 1362 printk_deprecated_rfkill_attribute(attr->attr.name); 1363 1364 if (parse_strtoul(buf, 1, &t)) 1365 return -EINVAL; 1366 1367 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1368 1369 /* This is in the ABI... */ 1370 if (tpacpi_rfk_check_hwblock_state() && !!t) 1371 return -EPERM; 1372 1373 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1374 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1375 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1376 1377 return (res < 0) ? res : count; 1378 } 1379 1380 /* procfs -------------------------------------------------------------- */ 1381 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1382 { 1383 if (id >= TPACPI_RFK_SW_MAX) 1384 seq_printf(m, "status:\t\tnot supported\n"); 1385 else { 1386 int status; 1387 1388 /* This is in the ABI... */ 1389 if (tpacpi_rfk_check_hwblock_state()) { 1390 status = TPACPI_RFK_RADIO_OFF; 1391 } else { 1392 status = tpacpi_rfk_update_swstate( 1393 tpacpi_rfkill_switches[id]); 1394 if (status < 0) 1395 return status; 1396 } 1397 1398 seq_printf(m, "status:\t\t%s\n", 1399 (status == TPACPI_RFK_RADIO_ON) ? 1400 "enabled" : "disabled"); 1401 seq_printf(m, "commands:\tenable, disable\n"); 1402 } 1403 1404 return 0; 1405 } 1406 1407 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1408 { 1409 char *cmd; 1410 int status = -1; 1411 int res = 0; 1412 1413 if (id >= TPACPI_RFK_SW_MAX) 1414 return -ENODEV; 1415 1416 while ((cmd = strsep(&buf, ","))) { 1417 if (strlencmp(cmd, "enable") == 0) 1418 status = TPACPI_RFK_RADIO_ON; 1419 else if (strlencmp(cmd, "disable") == 0) 1420 status = TPACPI_RFK_RADIO_OFF; 1421 else 1422 return -EINVAL; 1423 } 1424 1425 if (status != -1) { 1426 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1427 (status == TPACPI_RFK_RADIO_ON) ? 1428 "enable" : "disable", 1429 tpacpi_rfkill_names[id]); 1430 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1431 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1432 } 1433 1434 return res; 1435 } 1436 1437 /************************************************************************* 1438 * thinkpad-acpi driver attributes 1439 */ 1440 1441 /* interface_version --------------------------------------------------- */ 1442 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1443 { 1444 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1445 } 1446 static DRIVER_ATTR_RO(interface_version); 1447 1448 /* debug_level --------------------------------------------------------- */ 1449 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1450 { 1451 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1452 } 1453 1454 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1455 size_t count) 1456 { 1457 unsigned long t; 1458 1459 if (parse_strtoul(buf, 0xffff, &t)) 1460 return -EINVAL; 1461 1462 dbg_level = t; 1463 1464 return count; 1465 } 1466 static DRIVER_ATTR_RW(debug_level); 1467 1468 /* version ------------------------------------------------------------- */ 1469 static ssize_t version_show(struct device_driver *drv, char *buf) 1470 { 1471 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1472 TPACPI_DESC, TPACPI_VERSION); 1473 } 1474 static DRIVER_ATTR_RO(version); 1475 1476 /* --------------------------------------------------------------------- */ 1477 1478 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1479 1480 /* wlsw_emulstate ------------------------------------------------------ */ 1481 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1482 { 1483 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1484 } 1485 1486 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1487 size_t count) 1488 { 1489 unsigned long t; 1490 1491 if (parse_strtoul(buf, 1, &t)) 1492 return -EINVAL; 1493 1494 if (tpacpi_wlsw_emulstate != !!t) { 1495 tpacpi_wlsw_emulstate = !!t; 1496 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1497 } 1498 1499 return count; 1500 } 1501 static DRIVER_ATTR_RW(wlsw_emulstate); 1502 1503 /* bluetooth_emulstate ------------------------------------------------- */ 1504 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1505 { 1506 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1507 } 1508 1509 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1510 const char *buf, size_t count) 1511 { 1512 unsigned long t; 1513 1514 if (parse_strtoul(buf, 1, &t)) 1515 return -EINVAL; 1516 1517 tpacpi_bluetooth_emulstate = !!t; 1518 1519 return count; 1520 } 1521 static DRIVER_ATTR_RW(bluetooth_emulstate); 1522 1523 /* wwan_emulstate ------------------------------------------------- */ 1524 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1525 { 1526 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1527 } 1528 1529 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1530 size_t count) 1531 { 1532 unsigned long t; 1533 1534 if (parse_strtoul(buf, 1, &t)) 1535 return -EINVAL; 1536 1537 tpacpi_wwan_emulstate = !!t; 1538 1539 return count; 1540 } 1541 static DRIVER_ATTR_RW(wwan_emulstate); 1542 1543 /* uwb_emulstate ------------------------------------------------- */ 1544 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1545 { 1546 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1547 } 1548 1549 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1550 size_t count) 1551 { 1552 unsigned long t; 1553 1554 if (parse_strtoul(buf, 1, &t)) 1555 return -EINVAL; 1556 1557 tpacpi_uwb_emulstate = !!t; 1558 1559 return count; 1560 } 1561 static DRIVER_ATTR_RW(uwb_emulstate); 1562 #endif 1563 1564 /* --------------------------------------------------------------------- */ 1565 1566 static struct driver_attribute *tpacpi_driver_attributes[] = { 1567 &driver_attr_debug_level, &driver_attr_version, 1568 &driver_attr_interface_version, 1569 }; 1570 1571 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1572 { 1573 int i, res; 1574 1575 i = 0; 1576 res = 0; 1577 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1578 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1579 i++; 1580 } 1581 1582 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1583 if (!res && dbg_wlswemul) 1584 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1585 if (!res && dbg_bluetoothemul) 1586 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1587 if (!res && dbg_wwanemul) 1588 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1589 if (!res && dbg_uwbemul) 1590 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1591 #endif 1592 1593 return res; 1594 } 1595 1596 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1597 { 1598 int i; 1599 1600 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1601 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1602 1603 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1604 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1605 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1606 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1607 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1608 #endif 1609 } 1610 1611 /************************************************************************* 1612 * Firmware Data 1613 */ 1614 1615 /* 1616 * Table of recommended minimum BIOS versions 1617 * 1618 * Reasons for listing: 1619 * 1. Stable BIOS, listed because the unknown amount of 1620 * bugs and bad ACPI behaviour on older versions 1621 * 1622 * 2. BIOS or EC fw with known bugs that trigger on Linux 1623 * 1624 * 3. BIOS with known reduced functionality in older versions 1625 * 1626 * We recommend the latest BIOS and EC version. 1627 * We only support the latest BIOS and EC fw version as a rule. 1628 * 1629 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1630 * Information from users in ThinkWiki 1631 * 1632 * WARNING: we use this table also to detect that the machine is 1633 * a ThinkPad in some cases, so don't remove entries lightly. 1634 */ 1635 1636 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1637 { .vendor = (__v), \ 1638 .bios = TPID(__id1, __id2), \ 1639 .ec = TPACPI_MATCH_ANY, \ 1640 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1641 | TPVER(__bv1, __bv2) } 1642 1643 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1644 __eid, __ev1, __ev2) \ 1645 { .vendor = (__v), \ 1646 .bios = TPID(__bid1, __bid2), \ 1647 .ec = __eid, \ 1648 .quirks = TPVER(__ev1, __ev2) << 16 \ 1649 | TPVER(__bv1, __bv2) } 1650 1651 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1652 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1653 1654 /* Outdated IBM BIOSes often lack the EC id string */ 1655 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1656 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1657 __bv1, __bv2, TPID(__id1, __id2), \ 1658 __ev1, __ev2), \ 1659 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1660 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1661 __ev1, __ev2) 1662 1663 /* Outdated IBM BIOSes often lack the EC id string */ 1664 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1665 __eid1, __eid2, __ev1, __ev2) \ 1666 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1667 __bv1, __bv2, TPID(__eid1, __eid2), \ 1668 __ev1, __ev2), \ 1669 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1670 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1671 __ev1, __ev2) 1672 1673 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1674 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1675 1676 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1677 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1678 __bv1, __bv2, TPID(__id1, __id2), \ 1679 __ev1, __ev2) 1680 1681 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1682 __eid1, __eid2, __ev1, __ev2) \ 1683 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1684 __bv1, __bv2, TPID(__eid1, __eid2), \ 1685 __ev1, __ev2) 1686 1687 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1688 /* Numeric models ------------------ */ 1689 /* FW MODEL BIOS VERS */ 1690 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1691 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1692 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1693 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1694 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1695 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1696 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1697 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1698 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1699 1700 /* A-series ------------------------- */ 1701 /* FW MODEL BIOS VERS EC VERS */ 1702 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1703 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1704 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1705 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1706 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1707 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1708 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1709 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1710 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1711 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1712 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1713 1714 /* G-series ------------------------- */ 1715 /* FW MODEL BIOS VERS */ 1716 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1717 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1718 1719 /* R-series, T-series --------------- */ 1720 /* FW MODEL BIOS VERS EC VERS */ 1721 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1722 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1723 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1724 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1725 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1726 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1727 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1728 T40/p, T41/p, T42/p (1) */ 1729 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1730 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1731 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1732 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1733 1734 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1735 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1736 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1737 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1738 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1739 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1740 1741 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1742 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1743 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1744 1745 /* BIOS FW BIOS VERS EC FW EC VERS */ 1746 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1747 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1748 1749 /* X-series ------------------------- */ 1750 /* FW MODEL BIOS VERS EC VERS */ 1751 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1752 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1753 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1754 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1755 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1756 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1757 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1758 1759 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1760 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1761 1762 /* (0) - older versions lack DMI EC fw string and functionality */ 1763 /* (1) - older versions known to lack functionality */ 1764 }; 1765 1766 #undef TPV_QL1 1767 #undef TPV_QL0 1768 #undef TPV_QI2 1769 #undef TPV_QI1 1770 #undef TPV_QI0 1771 #undef TPV_Q_X 1772 #undef TPV_Q 1773 1774 static void __init tpacpi_check_outdated_fw(void) 1775 { 1776 unsigned long fwvers; 1777 u16 ec_version, bios_version; 1778 1779 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1780 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1781 1782 if (!fwvers) 1783 return; 1784 1785 bios_version = fwvers & 0xffffU; 1786 ec_version = (fwvers >> 16) & 0xffffU; 1787 1788 /* note that unknown versions are set to 0x0000 and we use that */ 1789 if ((bios_version > thinkpad_id.bios_release) || 1790 (ec_version > thinkpad_id.ec_release && 1791 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1792 /* 1793 * The changelogs would let us track down the exact 1794 * reason, but it is just too much of a pain to track 1795 * it. We only list BIOSes that are either really 1796 * broken, or really stable to begin with, so it is 1797 * best if the user upgrades the firmware anyway. 1798 */ 1799 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1800 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1801 } 1802 } 1803 1804 static bool __init tpacpi_is_fw_known(void) 1805 { 1806 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1807 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1808 } 1809 1810 /**************************************************************************** 1811 **************************************************************************** 1812 * 1813 * Subdrivers 1814 * 1815 **************************************************************************** 1816 ****************************************************************************/ 1817 1818 /************************************************************************* 1819 * thinkpad-acpi metadata subdriver 1820 */ 1821 1822 static int thinkpad_acpi_driver_read(struct seq_file *m) 1823 { 1824 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1825 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1826 return 0; 1827 } 1828 1829 static struct ibm_struct thinkpad_acpi_driver_data = { 1830 .name = "driver", 1831 .read = thinkpad_acpi_driver_read, 1832 }; 1833 1834 /************************************************************************* 1835 * Hotkey subdriver 1836 */ 1837 1838 /* 1839 * ThinkPad firmware event model 1840 * 1841 * The ThinkPad firmware has two main event interfaces: normal ACPI 1842 * notifications (which follow the ACPI standard), and a private event 1843 * interface. 1844 * 1845 * The private event interface also issues events for the hotkeys. As 1846 * the driver gained features, the event handling code ended up being 1847 * built around the hotkey subdriver. This will need to be refactored 1848 * to a more formal event API eventually. 1849 * 1850 * Some "hotkeys" are actually supposed to be used as event reports, 1851 * such as "brightness has changed", "volume has changed", depending on 1852 * the ThinkPad model and how the firmware is operating. 1853 * 1854 * Unlike other classes, hotkey-class events have mask/unmask control on 1855 * non-ancient firmware. However, how it behaves changes a lot with the 1856 * firmware model and version. 1857 */ 1858 1859 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1860 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1861 TP_ACPI_HOTKEYSCAN_FNF2, 1862 TP_ACPI_HOTKEYSCAN_FNF3, 1863 TP_ACPI_HOTKEYSCAN_FNF4, 1864 TP_ACPI_HOTKEYSCAN_FNF5, 1865 TP_ACPI_HOTKEYSCAN_FNF6, 1866 TP_ACPI_HOTKEYSCAN_FNF7, 1867 TP_ACPI_HOTKEYSCAN_FNF8, 1868 TP_ACPI_HOTKEYSCAN_FNF9, 1869 TP_ACPI_HOTKEYSCAN_FNF10, 1870 TP_ACPI_HOTKEYSCAN_FNF11, 1871 TP_ACPI_HOTKEYSCAN_FNF12, 1872 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1873 TP_ACPI_HOTKEYSCAN_FNINSERT, 1874 TP_ACPI_HOTKEYSCAN_FNDELETE, 1875 TP_ACPI_HOTKEYSCAN_FNHOME, 1876 TP_ACPI_HOTKEYSCAN_FNEND, 1877 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1878 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1879 TP_ACPI_HOTKEYSCAN_FNSPACE, 1880 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1881 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1882 TP_ACPI_HOTKEYSCAN_MUTE, 1883 TP_ACPI_HOTKEYSCAN_THINKPAD, 1884 TP_ACPI_HOTKEYSCAN_UNK1, 1885 TP_ACPI_HOTKEYSCAN_UNK2, 1886 TP_ACPI_HOTKEYSCAN_UNK3, 1887 TP_ACPI_HOTKEYSCAN_UNK4, 1888 TP_ACPI_HOTKEYSCAN_UNK5, 1889 TP_ACPI_HOTKEYSCAN_UNK6, 1890 TP_ACPI_HOTKEYSCAN_UNK7, 1891 TP_ACPI_HOTKEYSCAN_UNK8, 1892 1893 /* Adaptive keyboard keycodes */ 1894 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1895 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1896 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1897 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1898 TP_ACPI_HOTKEYSCAN_CLOUD, 1899 TP_ACPI_HOTKEYSCAN_UNK9, 1900 TP_ACPI_HOTKEYSCAN_VOICE, 1901 TP_ACPI_HOTKEYSCAN_UNK10, 1902 TP_ACPI_HOTKEYSCAN_GESTURES, 1903 TP_ACPI_HOTKEYSCAN_UNK11, 1904 TP_ACPI_HOTKEYSCAN_UNK12, 1905 TP_ACPI_HOTKEYSCAN_UNK13, 1906 TP_ACPI_HOTKEYSCAN_CONFIG, 1907 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1908 TP_ACPI_HOTKEYSCAN_RELOAD, 1909 TP_ACPI_HOTKEYSCAN_BACK, 1910 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1911 TP_ACPI_HOTKEYSCAN_MIC_UP, 1912 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1913 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1914 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1915 1916 /* Lenovo extended keymap, starting at 0x1300 */ 1917 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1918 /* first new observed key (star, favorites) is 0x1311 */ 1919 TP_ACPI_HOTKEYSCAN_STAR = 69, 1920 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1921 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1922 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1923 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1924 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1925 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1926 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1927 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1928 1929 /* Hotkey keymap size */ 1930 TPACPI_HOTKEY_MAP_LEN 1931 }; 1932 1933 enum { /* Keys/events available through NVRAM polling */ 1934 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1935 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1936 }; 1937 1938 enum { /* Positions of some of the keys in hotkey masks */ 1939 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1940 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1941 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1942 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1943 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1944 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1945 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1946 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1947 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1948 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1949 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1950 }; 1951 1952 enum { /* NVRAM to ACPI HKEY group map */ 1953 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1954 TP_ACPI_HKEY_ZOOM_MASK | 1955 TP_ACPI_HKEY_DISPSWTCH_MASK | 1956 TP_ACPI_HKEY_HIBERNATE_MASK, 1957 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1958 TP_ACPI_HKEY_BRGHTDWN_MASK, 1959 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1960 TP_ACPI_HKEY_VOLDWN_MASK | 1961 TP_ACPI_HKEY_MUTE_MASK, 1962 }; 1963 1964 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1965 struct tp_nvram_state { 1966 u16 thinkpad_toggle:1; 1967 u16 zoom_toggle:1; 1968 u16 display_toggle:1; 1969 u16 thinklight_toggle:1; 1970 u16 hibernate_toggle:1; 1971 u16 displayexp_toggle:1; 1972 u16 display_state:1; 1973 u16 brightness_toggle:1; 1974 u16 volume_toggle:1; 1975 u16 mute:1; 1976 1977 u8 brightness_level; 1978 u8 volume_level; 1979 }; 1980 1981 /* kthread for the hotkey poller */ 1982 static struct task_struct *tpacpi_hotkey_task; 1983 1984 /* 1985 * Acquire mutex to write poller control variables as an 1986 * atomic block. 1987 * 1988 * Increment hotkey_config_change when changing them if you 1989 * want the kthread to forget old state. 1990 * 1991 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1992 */ 1993 static struct mutex hotkey_thread_data_mutex; 1994 static unsigned int hotkey_config_change; 1995 1996 /* 1997 * hotkey poller control variables 1998 * 1999 * Must be atomic or readers will also need to acquire mutex 2000 * 2001 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 2002 * should be used only when the changes need to be taken as 2003 * a block, OR when one needs to force the kthread to forget 2004 * old state. 2005 */ 2006 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 2007 static unsigned int hotkey_poll_freq = 10; /* Hz */ 2008 2009 #define HOTKEY_CONFIG_CRITICAL_START \ 2010 do { \ 2011 mutex_lock(&hotkey_thread_data_mutex); \ 2012 hotkey_config_change++; \ 2013 } while (0); 2014 #define HOTKEY_CONFIG_CRITICAL_END \ 2015 mutex_unlock(&hotkey_thread_data_mutex); 2016 2017 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2018 2019 #define hotkey_source_mask 0U 2020 #define HOTKEY_CONFIG_CRITICAL_START 2021 #define HOTKEY_CONFIG_CRITICAL_END 2022 2023 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2024 2025 static struct mutex hotkey_mutex; 2026 2027 static enum { /* Reasons for waking up */ 2028 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2029 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2030 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2031 } hotkey_wakeup_reason; 2032 2033 static int hotkey_autosleep_ack; 2034 2035 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2036 static u32 hotkey_all_mask; /* all events supported in fw */ 2037 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2038 static u32 hotkey_reserved_mask; /* events better left disabled */ 2039 static u32 hotkey_driver_mask; /* events needed by the driver */ 2040 static u32 hotkey_user_mask; /* events visible to userspace */ 2041 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2042 2043 static u16 *hotkey_keycode_map; 2044 2045 static struct attribute_set *hotkey_dev_attributes; 2046 2047 static void tpacpi_driver_event(const unsigned int hkey_event); 2048 static void hotkey_driver_event(const unsigned int scancode); 2049 static void hotkey_poll_setup(const bool may_warn); 2050 2051 /* HKEY.MHKG() return bits */ 2052 #define TP_HOTKEY_TABLET_MASK (1 << 3) 2053 enum { 2054 TP_ACPI_MULTI_MODE_INVALID = 0, 2055 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 2056 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 2057 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 2058 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 2059 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 2060 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 2061 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 2062 }; 2063 2064 enum { 2065 /* The following modes are considered tablet mode for the purpose of 2066 * reporting the status to userspace. i.e. in all these modes it makes 2067 * sense to disable the laptop input devices such as touchpad and 2068 * keyboard. 2069 */ 2070 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 2071 TP_ACPI_MULTI_MODE_STAND | 2072 TP_ACPI_MULTI_MODE_TENT | 2073 TP_ACPI_MULTI_MODE_STAND_TENT, 2074 }; 2075 2076 static int hotkey_get_wlsw(void) 2077 { 2078 int status; 2079 2080 if (!tp_features.hotkey_wlsw) 2081 return -ENODEV; 2082 2083 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2084 if (dbg_wlswemul) 2085 return (tpacpi_wlsw_emulstate) ? 2086 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2087 #endif 2088 2089 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2090 return -EIO; 2091 2092 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2093 } 2094 2095 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2096 { 2097 int type = (s >> 16) & 0xffff; 2098 int value = s & 0xffff; 2099 int mode = TP_ACPI_MULTI_MODE_INVALID; 2100 int valid_modes = 0; 2101 2102 if (has_tablet_mode) 2103 *has_tablet_mode = 0; 2104 2105 switch (type) { 2106 case 1: 2107 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2108 TP_ACPI_MULTI_MODE_TABLET | 2109 TP_ACPI_MULTI_MODE_STAND_TENT; 2110 break; 2111 case 2: 2112 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2113 TP_ACPI_MULTI_MODE_FLAT | 2114 TP_ACPI_MULTI_MODE_TABLET | 2115 TP_ACPI_MULTI_MODE_STAND | 2116 TP_ACPI_MULTI_MODE_TENT; 2117 break; 2118 case 3: 2119 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2120 TP_ACPI_MULTI_MODE_FLAT; 2121 break; 2122 case 4: 2123 case 5: 2124 /* In mode 4, FLAT is not specified as a valid mode. However, 2125 * it can be seen at least on the X1 Yoga 2nd Generation. 2126 */ 2127 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2128 TP_ACPI_MULTI_MODE_FLAT | 2129 TP_ACPI_MULTI_MODE_TABLET | 2130 TP_ACPI_MULTI_MODE_STAND | 2131 TP_ACPI_MULTI_MODE_TENT; 2132 break; 2133 default: 2134 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2135 type, value, TPACPI_MAIL); 2136 return 0; 2137 } 2138 2139 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2140 *has_tablet_mode = 1; 2141 2142 switch (value) { 2143 case 1: 2144 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2145 break; 2146 case 2: 2147 mode = TP_ACPI_MULTI_MODE_FLAT; 2148 break; 2149 case 3: 2150 mode = TP_ACPI_MULTI_MODE_TABLET; 2151 break; 2152 case 4: 2153 if (type == 1) 2154 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2155 else 2156 mode = TP_ACPI_MULTI_MODE_STAND; 2157 break; 2158 case 5: 2159 mode = TP_ACPI_MULTI_MODE_TENT; 2160 break; 2161 default: 2162 if (type == 5 && value == 0xffff) { 2163 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2164 return 0; 2165 } 2166 } 2167 2168 if (!(mode & valid_modes)) { 2169 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2170 value, type, TPACPI_MAIL); 2171 return 0; 2172 } 2173 2174 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2175 } 2176 2177 static int hotkey_get_tablet_mode(int *status) 2178 { 2179 int s; 2180 2181 switch (tp_features.hotkey_tablet) { 2182 case TP_HOTKEY_TABLET_USES_MHKG: 2183 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2184 return -EIO; 2185 2186 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2187 break; 2188 case TP_HOTKEY_TABLET_USES_GMMS: 2189 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2190 return -EIO; 2191 2192 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2193 break; 2194 default: 2195 break; 2196 } 2197 2198 return 0; 2199 } 2200 2201 /* 2202 * Reads current event mask from firmware, and updates 2203 * hotkey_acpi_mask accordingly. Also resets any bits 2204 * from hotkey_user_mask that are unavailable to be 2205 * delivered (shadow requirement of the userspace ABI). 2206 * 2207 * Call with hotkey_mutex held 2208 */ 2209 static int hotkey_mask_get(void) 2210 { 2211 if (tp_features.hotkey_mask) { 2212 u32 m = 0; 2213 2214 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2215 return -EIO; 2216 2217 hotkey_acpi_mask = m; 2218 } else { 2219 /* no mask support doesn't mean no event support... */ 2220 hotkey_acpi_mask = hotkey_all_mask; 2221 } 2222 2223 /* sync userspace-visible mask */ 2224 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2225 2226 return 0; 2227 } 2228 2229 static void hotkey_mask_warn_incomplete_mask(void) 2230 { 2231 /* log only what the user can fix... */ 2232 const u32 wantedmask = hotkey_driver_mask & 2233 ~(hotkey_acpi_mask | hotkey_source_mask) & 2234 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2235 2236 if (wantedmask) 2237 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2238 } 2239 2240 /* 2241 * Set the firmware mask when supported 2242 * 2243 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2244 * 2245 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2246 * 2247 * Call with hotkey_mutex held 2248 */ 2249 static int hotkey_mask_set(u32 mask) 2250 { 2251 int i; 2252 int rc = 0; 2253 2254 const u32 fwmask = mask & ~hotkey_source_mask; 2255 2256 if (tp_features.hotkey_mask) { 2257 for (i = 0; i < 32; i++) { 2258 if (!acpi_evalf(hkey_handle, 2259 NULL, "MHKM", "vdd", i + 1, 2260 !!(mask & (1 << i)))) { 2261 rc = -EIO; 2262 break; 2263 } 2264 } 2265 } 2266 2267 /* 2268 * We *must* make an inconditional call to hotkey_mask_get to 2269 * refresh hotkey_acpi_mask and update hotkey_user_mask 2270 * 2271 * Take the opportunity to also log when we cannot _enable_ 2272 * a given event. 2273 */ 2274 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2275 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2276 fwmask, hotkey_acpi_mask); 2277 } 2278 2279 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2280 hotkey_mask_warn_incomplete_mask(); 2281 2282 return rc; 2283 } 2284 2285 /* 2286 * Sets hotkey_user_mask and tries to set the firmware mask 2287 * 2288 * Call with hotkey_mutex held 2289 */ 2290 static int hotkey_user_mask_set(const u32 mask) 2291 { 2292 int rc; 2293 2294 /* Give people a chance to notice they are doing something that 2295 * is bound to go boom on their users sooner or later */ 2296 if (!tp_warned.hotkey_mask_ff && 2297 (mask == 0xffff || mask == 0xffffff || 2298 mask == 0xffffffff)) { 2299 tp_warned.hotkey_mask_ff = 1; 2300 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2301 mask); 2302 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2303 } 2304 2305 /* Try to enable what the user asked for, plus whatever we need. 2306 * this syncs everything but won't enable bits in hotkey_user_mask */ 2307 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2308 2309 /* Enable the available bits in hotkey_user_mask */ 2310 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2311 2312 return rc; 2313 } 2314 2315 /* 2316 * Sets the driver hotkey mask. 2317 * 2318 * Can be called even if the hotkey subdriver is inactive 2319 */ 2320 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2321 { 2322 int rc; 2323 2324 /* Do the right thing if hotkey_init has not been called yet */ 2325 if (!tp_features.hotkey) { 2326 hotkey_driver_mask = mask; 2327 return 0; 2328 } 2329 2330 mutex_lock(&hotkey_mutex); 2331 2332 HOTKEY_CONFIG_CRITICAL_START 2333 hotkey_driver_mask = mask; 2334 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2335 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2336 #endif 2337 HOTKEY_CONFIG_CRITICAL_END 2338 2339 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2340 ~hotkey_source_mask); 2341 hotkey_poll_setup(true); 2342 2343 mutex_unlock(&hotkey_mutex); 2344 2345 return rc; 2346 } 2347 2348 static int hotkey_status_get(int *status) 2349 { 2350 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2351 return -EIO; 2352 2353 return 0; 2354 } 2355 2356 static int hotkey_status_set(bool enable) 2357 { 2358 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2359 return -EIO; 2360 2361 return 0; 2362 } 2363 2364 static void tpacpi_input_send_tabletsw(void) 2365 { 2366 int state; 2367 2368 if (tp_features.hotkey_tablet && 2369 !hotkey_get_tablet_mode(&state)) { 2370 mutex_lock(&tpacpi_inputdev_send_mutex); 2371 2372 input_report_switch(tpacpi_inputdev, 2373 SW_TABLET_MODE, !!state); 2374 input_sync(tpacpi_inputdev); 2375 2376 mutex_unlock(&tpacpi_inputdev_send_mutex); 2377 } 2378 } 2379 2380 /* Do NOT call without validating scancode first */ 2381 static void tpacpi_input_send_key(const unsigned int scancode) 2382 { 2383 const unsigned int keycode = hotkey_keycode_map[scancode]; 2384 2385 if (keycode != KEY_RESERVED) { 2386 mutex_lock(&tpacpi_inputdev_send_mutex); 2387 2388 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2389 input_report_key(tpacpi_inputdev, keycode, 1); 2390 input_sync(tpacpi_inputdev); 2391 2392 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2393 input_report_key(tpacpi_inputdev, keycode, 0); 2394 input_sync(tpacpi_inputdev); 2395 2396 mutex_unlock(&tpacpi_inputdev_send_mutex); 2397 } 2398 } 2399 2400 /* Do NOT call without validating scancode first */ 2401 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2402 { 2403 hotkey_driver_event(scancode); 2404 if (hotkey_user_mask & (1 << scancode)) 2405 tpacpi_input_send_key(scancode); 2406 } 2407 2408 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2409 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2410 2411 /* Do NOT call without validating scancode first */ 2412 static void tpacpi_hotkey_send_key(unsigned int scancode) 2413 { 2414 tpacpi_input_send_key_masked(scancode); 2415 } 2416 2417 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2418 { 2419 u8 d; 2420 2421 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2422 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2423 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2424 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2425 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2426 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2427 } 2428 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2429 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2430 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2431 } 2432 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2433 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2434 n->displayexp_toggle = 2435 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2436 } 2437 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2438 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2439 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2440 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2441 n->brightness_toggle = 2442 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2443 } 2444 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2445 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2446 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2447 >> TP_NVRAM_POS_LEVEL_VOLUME; 2448 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2449 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2450 } 2451 } 2452 2453 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2454 do { \ 2455 if ((event_mask & (1 << __scancode)) && \ 2456 oldn->__member != newn->__member) \ 2457 tpacpi_hotkey_send_key(__scancode); \ 2458 } while (0) 2459 2460 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2461 do { \ 2462 if (event_mask & (1 << __scancode)) \ 2463 tpacpi_hotkey_send_key(__scancode); \ 2464 } while (0) 2465 2466 static void issue_volchange(const unsigned int oldvol, 2467 const unsigned int newvol, 2468 const u32 event_mask) 2469 { 2470 unsigned int i = oldvol; 2471 2472 while (i > newvol) { 2473 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2474 i--; 2475 } 2476 while (i < newvol) { 2477 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2478 i++; 2479 } 2480 } 2481 2482 static void issue_brightnesschange(const unsigned int oldbrt, 2483 const unsigned int newbrt, 2484 const u32 event_mask) 2485 { 2486 unsigned int i = oldbrt; 2487 2488 while (i > newbrt) { 2489 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2490 i--; 2491 } 2492 while (i < newbrt) { 2493 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2494 i++; 2495 } 2496 } 2497 2498 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2499 struct tp_nvram_state *newn, 2500 const u32 event_mask) 2501 { 2502 2503 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2504 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2505 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2506 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2507 2508 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2509 2510 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2511 2512 /* 2513 * Handle volume 2514 * 2515 * This code is supposed to duplicate the IBM firmware behaviour: 2516 * - Pressing MUTE issues mute hotkey message, even when already mute 2517 * - Pressing Volume up/down issues volume up/down hotkey messages, 2518 * even when already at maximum or minimum volume 2519 * - The act of unmuting issues volume up/down notification, 2520 * depending which key was used to unmute 2521 * 2522 * We are constrained to what the NVRAM can tell us, which is not much 2523 * and certainly not enough if more than one volume hotkey was pressed 2524 * since the last poll cycle. 2525 * 2526 * Just to make our life interesting, some newer Lenovo ThinkPads have 2527 * bugs in the BIOS and may fail to update volume_toggle properly. 2528 */ 2529 if (newn->mute) { 2530 /* muted */ 2531 if (!oldn->mute || 2532 oldn->volume_toggle != newn->volume_toggle || 2533 oldn->volume_level != newn->volume_level) { 2534 /* recently muted, or repeated mute keypress, or 2535 * multiple presses ending in mute */ 2536 issue_volchange(oldn->volume_level, newn->volume_level, 2537 event_mask); 2538 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2539 } 2540 } else { 2541 /* unmute */ 2542 if (oldn->mute) { 2543 /* recently unmuted, issue 'unmute' keypress */ 2544 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2545 } 2546 if (oldn->volume_level != newn->volume_level) { 2547 issue_volchange(oldn->volume_level, newn->volume_level, 2548 event_mask); 2549 } else if (oldn->volume_toggle != newn->volume_toggle) { 2550 /* repeated vol up/down keypress at end of scale ? */ 2551 if (newn->volume_level == 0) 2552 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2553 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2554 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2555 } 2556 } 2557 2558 /* handle brightness */ 2559 if (oldn->brightness_level != newn->brightness_level) { 2560 issue_brightnesschange(oldn->brightness_level, 2561 newn->brightness_level, event_mask); 2562 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2563 /* repeated key presses that didn't change state */ 2564 if (newn->brightness_level == 0) 2565 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2566 else if (newn->brightness_level >= bright_maxlvl 2567 && !tp_features.bright_unkfw) 2568 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2569 } 2570 2571 #undef TPACPI_COMPARE_KEY 2572 #undef TPACPI_MAY_SEND_KEY 2573 } 2574 2575 /* 2576 * Polling driver 2577 * 2578 * We track all events in hotkey_source_mask all the time, since 2579 * most of them are edge-based. We only issue those requested by 2580 * hotkey_user_mask or hotkey_driver_mask, though. 2581 */ 2582 static int hotkey_kthread(void *data) 2583 { 2584 struct tp_nvram_state s[2] = { 0 }; 2585 u32 poll_mask, event_mask; 2586 unsigned int si, so; 2587 unsigned long t; 2588 unsigned int change_detector; 2589 unsigned int poll_freq; 2590 bool was_frozen; 2591 2592 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2593 goto exit; 2594 2595 set_freezable(); 2596 2597 so = 0; 2598 si = 1; 2599 t = 0; 2600 2601 /* Initial state for compares */ 2602 mutex_lock(&hotkey_thread_data_mutex); 2603 change_detector = hotkey_config_change; 2604 poll_mask = hotkey_source_mask; 2605 event_mask = hotkey_source_mask & 2606 (hotkey_driver_mask | hotkey_user_mask); 2607 poll_freq = hotkey_poll_freq; 2608 mutex_unlock(&hotkey_thread_data_mutex); 2609 hotkey_read_nvram(&s[so], poll_mask); 2610 2611 while (!kthread_should_stop()) { 2612 if (t == 0) { 2613 if (likely(poll_freq)) 2614 t = 1000/poll_freq; 2615 else 2616 t = 100; /* should never happen... */ 2617 } 2618 t = msleep_interruptible(t); 2619 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2620 break; 2621 2622 if (t > 0 && !was_frozen) 2623 continue; 2624 2625 mutex_lock(&hotkey_thread_data_mutex); 2626 if (was_frozen || hotkey_config_change != change_detector) { 2627 /* forget old state on thaw or config change */ 2628 si = so; 2629 t = 0; 2630 change_detector = hotkey_config_change; 2631 } 2632 poll_mask = hotkey_source_mask; 2633 event_mask = hotkey_source_mask & 2634 (hotkey_driver_mask | hotkey_user_mask); 2635 poll_freq = hotkey_poll_freq; 2636 mutex_unlock(&hotkey_thread_data_mutex); 2637 2638 if (likely(poll_mask)) { 2639 hotkey_read_nvram(&s[si], poll_mask); 2640 if (likely(si != so)) { 2641 hotkey_compare_and_issue_event(&s[so], &s[si], 2642 event_mask); 2643 } 2644 } 2645 2646 so = si; 2647 si ^= 1; 2648 } 2649 2650 exit: 2651 return 0; 2652 } 2653 2654 /* call with hotkey_mutex held */ 2655 static void hotkey_poll_stop_sync(void) 2656 { 2657 if (tpacpi_hotkey_task) { 2658 kthread_stop(tpacpi_hotkey_task); 2659 tpacpi_hotkey_task = NULL; 2660 } 2661 } 2662 2663 /* call with hotkey_mutex held */ 2664 static void hotkey_poll_setup(const bool may_warn) 2665 { 2666 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2667 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2668 2669 if (hotkey_poll_freq > 0 && 2670 (poll_driver_mask || 2671 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2672 if (!tpacpi_hotkey_task) { 2673 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2674 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2675 if (IS_ERR(tpacpi_hotkey_task)) { 2676 tpacpi_hotkey_task = NULL; 2677 pr_err("could not create kernel thread for hotkey polling\n"); 2678 } 2679 } 2680 } else { 2681 hotkey_poll_stop_sync(); 2682 if (may_warn && (poll_driver_mask || poll_user_mask) && 2683 hotkey_poll_freq == 0) { 2684 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2685 poll_user_mask, poll_driver_mask); 2686 } 2687 } 2688 } 2689 2690 static void hotkey_poll_setup_safe(const bool may_warn) 2691 { 2692 mutex_lock(&hotkey_mutex); 2693 hotkey_poll_setup(may_warn); 2694 mutex_unlock(&hotkey_mutex); 2695 } 2696 2697 /* call with hotkey_mutex held */ 2698 static void hotkey_poll_set_freq(unsigned int freq) 2699 { 2700 if (!freq) 2701 hotkey_poll_stop_sync(); 2702 2703 hotkey_poll_freq = freq; 2704 } 2705 2706 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2707 2708 static void hotkey_poll_setup(const bool __unused) 2709 { 2710 } 2711 2712 static void hotkey_poll_setup_safe(const bool __unused) 2713 { 2714 } 2715 2716 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2717 2718 static int hotkey_inputdev_open(struct input_dev *dev) 2719 { 2720 switch (tpacpi_lifecycle) { 2721 case TPACPI_LIFE_INIT: 2722 case TPACPI_LIFE_RUNNING: 2723 hotkey_poll_setup_safe(false); 2724 return 0; 2725 case TPACPI_LIFE_EXITING: 2726 return -EBUSY; 2727 } 2728 2729 /* Should only happen if tpacpi_lifecycle is corrupt */ 2730 BUG(); 2731 return -EBUSY; 2732 } 2733 2734 static void hotkey_inputdev_close(struct input_dev *dev) 2735 { 2736 /* disable hotkey polling when possible */ 2737 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2738 !(hotkey_source_mask & hotkey_driver_mask)) 2739 hotkey_poll_setup_safe(false); 2740 } 2741 2742 /* sysfs hotkey enable ------------------------------------------------- */ 2743 static ssize_t hotkey_enable_show(struct device *dev, 2744 struct device_attribute *attr, 2745 char *buf) 2746 { 2747 int res, status; 2748 2749 printk_deprecated_attribute("hotkey_enable", 2750 "Hotkey reporting is always enabled"); 2751 2752 res = hotkey_status_get(&status); 2753 if (res) 2754 return res; 2755 2756 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2757 } 2758 2759 static ssize_t hotkey_enable_store(struct device *dev, 2760 struct device_attribute *attr, 2761 const char *buf, size_t count) 2762 { 2763 unsigned long t; 2764 2765 printk_deprecated_attribute("hotkey_enable", 2766 "Hotkeys can be disabled through hotkey_mask"); 2767 2768 if (parse_strtoul(buf, 1, &t)) 2769 return -EINVAL; 2770 2771 if (t == 0) 2772 return -EPERM; 2773 2774 return count; 2775 } 2776 2777 static DEVICE_ATTR_RW(hotkey_enable); 2778 2779 /* sysfs hotkey mask --------------------------------------------------- */ 2780 static ssize_t hotkey_mask_show(struct device *dev, 2781 struct device_attribute *attr, 2782 char *buf) 2783 { 2784 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2785 } 2786 2787 static ssize_t hotkey_mask_store(struct device *dev, 2788 struct device_attribute *attr, 2789 const char *buf, size_t count) 2790 { 2791 unsigned long t; 2792 int res; 2793 2794 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2795 return -EINVAL; 2796 2797 if (mutex_lock_killable(&hotkey_mutex)) 2798 return -ERESTARTSYS; 2799 2800 res = hotkey_user_mask_set(t); 2801 2802 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2803 hotkey_poll_setup(true); 2804 #endif 2805 2806 mutex_unlock(&hotkey_mutex); 2807 2808 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2809 2810 return (res) ? res : count; 2811 } 2812 2813 static DEVICE_ATTR_RW(hotkey_mask); 2814 2815 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2816 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2817 struct device_attribute *attr, 2818 char *buf) 2819 { 2820 return sprintf(buf, "0\n"); 2821 } 2822 2823 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2824 2825 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2826 static ssize_t hotkey_bios_mask_show(struct device *dev, 2827 struct device_attribute *attr, 2828 char *buf) 2829 { 2830 printk_deprecated_attribute("hotkey_bios_mask", 2831 "This attribute is useless."); 2832 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2833 } 2834 2835 static DEVICE_ATTR_RO(hotkey_bios_mask); 2836 2837 /* sysfs hotkey all_mask ----------------------------------------------- */ 2838 static ssize_t hotkey_all_mask_show(struct device *dev, 2839 struct device_attribute *attr, 2840 char *buf) 2841 { 2842 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2843 hotkey_all_mask | hotkey_source_mask); 2844 } 2845 2846 static DEVICE_ATTR_RO(hotkey_all_mask); 2847 2848 /* sysfs hotkey all_mask ----------------------------------------------- */ 2849 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2850 struct device_attribute *attr, 2851 char *buf) 2852 { 2853 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2854 hotkey_adaptive_all_mask | hotkey_source_mask); 2855 } 2856 2857 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2858 2859 /* sysfs hotkey recommended_mask --------------------------------------- */ 2860 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2861 struct device_attribute *attr, 2862 char *buf) 2863 { 2864 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2865 (hotkey_all_mask | hotkey_source_mask) 2866 & ~hotkey_reserved_mask); 2867 } 2868 2869 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2870 2871 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2872 2873 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2874 static ssize_t hotkey_source_mask_show(struct device *dev, 2875 struct device_attribute *attr, 2876 char *buf) 2877 { 2878 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2879 } 2880 2881 static ssize_t hotkey_source_mask_store(struct device *dev, 2882 struct device_attribute *attr, 2883 const char *buf, size_t count) 2884 { 2885 unsigned long t; 2886 u32 r_ev; 2887 int rc; 2888 2889 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2890 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2891 return -EINVAL; 2892 2893 if (mutex_lock_killable(&hotkey_mutex)) 2894 return -ERESTARTSYS; 2895 2896 HOTKEY_CONFIG_CRITICAL_START 2897 hotkey_source_mask = t; 2898 HOTKEY_CONFIG_CRITICAL_END 2899 2900 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2901 ~hotkey_source_mask); 2902 hotkey_poll_setup(true); 2903 2904 /* check if events needed by the driver got disabled */ 2905 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2906 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2907 2908 mutex_unlock(&hotkey_mutex); 2909 2910 if (rc < 0) 2911 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2912 2913 if (r_ev) 2914 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2915 r_ev); 2916 2917 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2918 2919 return (rc < 0) ? rc : count; 2920 } 2921 2922 static DEVICE_ATTR_RW(hotkey_source_mask); 2923 2924 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2925 static ssize_t hotkey_poll_freq_show(struct device *dev, 2926 struct device_attribute *attr, 2927 char *buf) 2928 { 2929 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2930 } 2931 2932 static ssize_t hotkey_poll_freq_store(struct device *dev, 2933 struct device_attribute *attr, 2934 const char *buf, size_t count) 2935 { 2936 unsigned long t; 2937 2938 if (parse_strtoul(buf, 25, &t)) 2939 return -EINVAL; 2940 2941 if (mutex_lock_killable(&hotkey_mutex)) 2942 return -ERESTARTSYS; 2943 2944 hotkey_poll_set_freq(t); 2945 hotkey_poll_setup(true); 2946 2947 mutex_unlock(&hotkey_mutex); 2948 2949 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2950 2951 return count; 2952 } 2953 2954 static DEVICE_ATTR_RW(hotkey_poll_freq); 2955 2956 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2957 2958 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2959 static ssize_t hotkey_radio_sw_show(struct device *dev, 2960 struct device_attribute *attr, 2961 char *buf) 2962 { 2963 int res; 2964 res = hotkey_get_wlsw(); 2965 if (res < 0) 2966 return res; 2967 2968 /* Opportunistic update */ 2969 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2970 2971 return snprintf(buf, PAGE_SIZE, "%d\n", 2972 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2973 } 2974 2975 static DEVICE_ATTR_RO(hotkey_radio_sw); 2976 2977 static void hotkey_radio_sw_notify_change(void) 2978 { 2979 if (tp_features.hotkey_wlsw) 2980 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2981 "hotkey_radio_sw"); 2982 } 2983 2984 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2985 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2986 struct device_attribute *attr, 2987 char *buf) 2988 { 2989 int res, s; 2990 res = hotkey_get_tablet_mode(&s); 2991 if (res < 0) 2992 return res; 2993 2994 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2995 } 2996 2997 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2998 2999 static void hotkey_tablet_mode_notify_change(void) 3000 { 3001 if (tp_features.hotkey_tablet) 3002 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3003 "hotkey_tablet_mode"); 3004 } 3005 3006 /* sysfs wakeup reason (pollable) -------------------------------------- */ 3007 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 3008 struct device_attribute *attr, 3009 char *buf) 3010 { 3011 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 3012 } 3013 3014 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 3015 3016 static void hotkey_wakeup_reason_notify_change(void) 3017 { 3018 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3019 "wakeup_reason"); 3020 } 3021 3022 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 3023 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 3024 struct device_attribute *attr, 3025 char *buf) 3026 { 3027 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 3028 } 3029 3030 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 3031 hotkey_wakeup_hotunplug_complete_show, NULL); 3032 3033 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 3034 { 3035 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3036 "wakeup_hotunplug_complete"); 3037 } 3038 3039 /* sysfs adaptive kbd mode --------------------------------------------- */ 3040 3041 static int adaptive_keyboard_get_mode(void); 3042 static int adaptive_keyboard_set_mode(int new_mode); 3043 3044 enum ADAPTIVE_KEY_MODE { 3045 HOME_MODE, 3046 WEB_BROWSER_MODE, 3047 WEB_CONFERENCE_MODE, 3048 FUNCTION_MODE, 3049 LAYFLAT_MODE 3050 }; 3051 3052 static ssize_t adaptive_kbd_mode_show(struct device *dev, 3053 struct device_attribute *attr, 3054 char *buf) 3055 { 3056 int current_mode; 3057 3058 current_mode = adaptive_keyboard_get_mode(); 3059 if (current_mode < 0) 3060 return current_mode; 3061 3062 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 3063 } 3064 3065 static ssize_t adaptive_kbd_mode_store(struct device *dev, 3066 struct device_attribute *attr, 3067 const char *buf, size_t count) 3068 { 3069 unsigned long t; 3070 int res; 3071 3072 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3073 return -EINVAL; 3074 3075 res = adaptive_keyboard_set_mode(t); 3076 return (res < 0) ? res : count; 3077 } 3078 3079 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3080 3081 static struct attribute *adaptive_kbd_attributes[] = { 3082 &dev_attr_adaptive_kbd_mode.attr, 3083 NULL 3084 }; 3085 3086 static const struct attribute_group adaptive_kbd_attr_group = { 3087 .attrs = adaptive_kbd_attributes, 3088 }; 3089 3090 /* --------------------------------------------------------------------- */ 3091 3092 static struct attribute *hotkey_attributes[] __initdata = { 3093 &dev_attr_hotkey_enable.attr, 3094 &dev_attr_hotkey_bios_enabled.attr, 3095 &dev_attr_hotkey_bios_mask.attr, 3096 &dev_attr_wakeup_reason.attr, 3097 &dev_attr_wakeup_hotunplug_complete.attr, 3098 &dev_attr_hotkey_mask.attr, 3099 &dev_attr_hotkey_all_mask.attr, 3100 &dev_attr_hotkey_adaptive_all_mask.attr, 3101 &dev_attr_hotkey_recommended_mask.attr, 3102 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3103 &dev_attr_hotkey_source_mask.attr, 3104 &dev_attr_hotkey_poll_freq.attr, 3105 #endif 3106 }; 3107 3108 /* 3109 * Sync both the hw and sw blocking state of all switches 3110 */ 3111 static void tpacpi_send_radiosw_update(void) 3112 { 3113 int wlsw; 3114 3115 /* 3116 * We must sync all rfkill controllers *before* issuing any 3117 * rfkill input events, or we will race the rfkill core input 3118 * handler. 3119 * 3120 * tpacpi_inputdev_send_mutex works as a synchronization point 3121 * for the above. 3122 * 3123 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3124 */ 3125 3126 wlsw = hotkey_get_wlsw(); 3127 3128 /* Sync hw blocking state first if it is hw-blocked */ 3129 if (wlsw == TPACPI_RFK_RADIO_OFF) 3130 tpacpi_rfk_update_hwblock_state(true); 3131 3132 /* Sync sw blocking state */ 3133 tpacpi_rfk_update_swstate_all(); 3134 3135 /* Sync hw blocking state last if it is hw-unblocked */ 3136 if (wlsw == TPACPI_RFK_RADIO_ON) 3137 tpacpi_rfk_update_hwblock_state(false); 3138 3139 /* Issue rfkill input event for WLSW switch */ 3140 if (!(wlsw < 0)) { 3141 mutex_lock(&tpacpi_inputdev_send_mutex); 3142 3143 input_report_switch(tpacpi_inputdev, 3144 SW_RFKILL_ALL, (wlsw > 0)); 3145 input_sync(tpacpi_inputdev); 3146 3147 mutex_unlock(&tpacpi_inputdev_send_mutex); 3148 } 3149 3150 /* 3151 * this can be unconditional, as we will poll state again 3152 * if userspace uses the notify to read data 3153 */ 3154 hotkey_radio_sw_notify_change(); 3155 } 3156 3157 static void hotkey_exit(void) 3158 { 3159 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3160 mutex_lock(&hotkey_mutex); 3161 hotkey_poll_stop_sync(); 3162 mutex_unlock(&hotkey_mutex); 3163 #endif 3164 3165 if (hotkey_dev_attributes) 3166 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3167 3168 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3169 "restoring original HKEY status and mask\n"); 3170 /* yes, there is a bitwise or below, we want the 3171 * functions to be called even if one of them fail */ 3172 if (((tp_features.hotkey_mask && 3173 hotkey_mask_set(hotkey_orig_mask)) | 3174 hotkey_status_set(false)) != 0) 3175 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3176 } 3177 3178 static void __init hotkey_unmap(const unsigned int scancode) 3179 { 3180 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3181 clear_bit(hotkey_keycode_map[scancode], 3182 tpacpi_inputdev->keybit); 3183 hotkey_keycode_map[scancode] = KEY_RESERVED; 3184 } 3185 } 3186 3187 /* 3188 * HKEY quirks: 3189 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3190 */ 3191 3192 #define TPACPI_HK_Q_INIMASK 0x0001 3193 3194 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3195 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3196 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3197 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3198 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3199 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3200 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3201 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3202 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3203 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3204 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3205 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3206 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3207 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3208 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3209 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3210 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3211 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3212 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3213 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3214 }; 3215 3216 typedef u16 tpacpi_keymap_entry_t; 3217 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3218 3219 static int hotkey_init_tablet_mode(void) 3220 { 3221 int in_tablet_mode = 0, res; 3222 char *type = NULL; 3223 3224 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3225 int has_tablet_mode; 3226 3227 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3228 &has_tablet_mode); 3229 /* 3230 * The Yoga 11e series has 2 accelerometers described by a 3231 * BOSC0200 ACPI node. This setup relies on a Windows service 3232 * which calls special ACPI methods on this node to report 3233 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3234 * does not support this, so skip the hotkey on these models. 3235 */ 3236 if (has_tablet_mode && !dual_accel_detect()) 3237 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3238 type = "GMMS"; 3239 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3240 /* For X41t, X60t, X61t Tablets... */ 3241 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3242 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3243 type = "MHKG"; 3244 } 3245 3246 if (!tp_features.hotkey_tablet) 3247 return 0; 3248 3249 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3250 type, in_tablet_mode ? "tablet" : "laptop"); 3251 3252 res = add_to_attr_set(hotkey_dev_attributes, 3253 &dev_attr_hotkey_tablet_mode.attr); 3254 if (res) 3255 return -1; 3256 3257 return in_tablet_mode; 3258 } 3259 3260 static int __init hotkey_init(struct ibm_init_struct *iibm) 3261 { 3262 /* Requirements for changing the default keymaps: 3263 * 3264 * 1. Many of the keys are mapped to KEY_RESERVED for very 3265 * good reasons. Do not change them unless you have deep 3266 * knowledge on the IBM and Lenovo ThinkPad firmware for 3267 * the various ThinkPad models. The driver behaves 3268 * differently for KEY_RESERVED: such keys have their 3269 * hot key mask *unset* in mask_recommended, and also 3270 * in the initial hot key mask programmed into the 3271 * firmware at driver load time, which means the firm- 3272 * ware may react very differently if you change them to 3273 * something else; 3274 * 3275 * 2. You must be subscribed to the linux-thinkpad and 3276 * ibm-acpi-devel mailing lists, and you should read the 3277 * list archives since 2007 if you want to change the 3278 * keymaps. This requirement exists so that you will 3279 * know the past history of problems with the thinkpad- 3280 * acpi driver keymaps, and also that you will be 3281 * listening to any bug reports; 3282 * 3283 * 3. Do not send thinkpad-acpi specific patches directly to 3284 * for merging, *ever*. Send them to the linux-acpi 3285 * mailinglist for comments. Merging is to be done only 3286 * through acpi-test and the ACPI maintainer. 3287 * 3288 * If the above is too much to ask, don't change the keymap. 3289 * Ask the thinkpad-acpi maintainer to do it, instead. 3290 */ 3291 3292 enum keymap_index { 3293 TPACPI_KEYMAP_IBM_GENERIC = 0, 3294 TPACPI_KEYMAP_LENOVO_GENERIC, 3295 }; 3296 3297 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3298 /* Generic keymap for IBM ThinkPads */ 3299 [TPACPI_KEYMAP_IBM_GENERIC] = { 3300 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3301 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3302 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3303 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3304 3305 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3306 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3307 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3308 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3309 3310 /* brightness: firmware always reacts to them */ 3311 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3312 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3313 3314 /* Thinklight: firmware always react to it */ 3315 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3316 3317 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3318 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3319 3320 /* Volume: firmware always react to it and reprograms 3321 * the built-in *extra* mixer. Never map it to control 3322 * another mixer by default. */ 3323 KEY_RESERVED, /* 0x14: VOLUME UP */ 3324 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3325 KEY_RESERVED, /* 0x16: MUTE */ 3326 3327 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3328 3329 /* (assignments unknown, please report if found) */ 3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3332 3333 /* No assignments, only used for Adaptive keyboards. */ 3334 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3336 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3337 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3338 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3339 3340 /* No assignment, used for newer Lenovo models */ 3341 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3342 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3343 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3344 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3345 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3346 KEY_UNKNOWN, KEY_UNKNOWN 3347 3348 }, 3349 3350 /* Generic keymap for Lenovo ThinkPads */ 3351 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3352 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3353 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3354 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3355 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3356 3357 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3358 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3359 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3360 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3361 3362 /* These should be enabled --only-- when ACPI video 3363 * is disabled (i.e. in "vendor" mode), and are handled 3364 * in a special way by the init code */ 3365 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3366 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3367 3368 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3369 3370 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3371 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3372 3373 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3374 * react to it and reprograms the built-in *extra* mixer. 3375 * Never map it to control another mixer by default. 3376 * 3377 * T60?, T61, R60?, R61: firmware and EC tries to send 3378 * these over the regular keyboard, so these are no-ops, 3379 * but there are still weird bugs re. MUTE, so do not 3380 * change unless you get test reports from all Lenovo 3381 * models. May cause the BIOS to interfere with the 3382 * HDA mixer. 3383 */ 3384 KEY_RESERVED, /* 0x14: VOLUME UP */ 3385 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3386 KEY_RESERVED, /* 0x16: MUTE */ 3387 3388 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3389 3390 /* (assignments unknown, please report if found) */ 3391 KEY_UNKNOWN, KEY_UNKNOWN, 3392 3393 /* 3394 * The mic mute button only sends 0x1a. It does not 3395 * automatically mute the mic or change the mute light. 3396 */ 3397 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3398 3399 /* (assignments unknown, please report if found) */ 3400 KEY_UNKNOWN, 3401 3402 /* Extra keys in use since the X240 / T440 / T540 */ 3403 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3404 3405 /* 3406 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3407 * The first item in this list is the Mute button which is 3408 * emitted with 0x103 through 3409 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3410 * symbol is held. 3411 * We'll need to offset those by 0x20. 3412 */ 3413 KEY_RESERVED, /* Mute held, 0x103 */ 3414 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3415 KEY_RESERVED, /* Clipping tool */ 3416 KEY_RESERVED, /* Cloud */ 3417 KEY_RESERVED, 3418 KEY_VOICECOMMAND, /* Voice */ 3419 KEY_RESERVED, 3420 KEY_RESERVED, /* Gestures */ 3421 KEY_RESERVED, 3422 KEY_RESERVED, 3423 KEY_RESERVED, 3424 KEY_CONFIG, /* Settings */ 3425 KEY_RESERVED, /* New tab */ 3426 KEY_REFRESH, /* Reload */ 3427 KEY_BACK, /* Back */ 3428 KEY_RESERVED, /* Microphone down */ 3429 KEY_RESERVED, /* Microphone up */ 3430 KEY_RESERVED, /* Microphone cancellation */ 3431 KEY_RESERVED, /* Camera mode */ 3432 KEY_RESERVED, /* Rotate display, 0x116 */ 3433 3434 /* 3435 * These are found in 2017 models (e.g. T470s, X270). 3436 * The lowest known value is 0x311, which according to 3437 * the manual should launch a user defined favorite 3438 * application. 3439 * 3440 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3441 * corresponding to 0x34. 3442 */ 3443 3444 /* (assignments unknown, please report if found) */ 3445 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3446 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3447 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3448 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3449 KEY_UNKNOWN, 3450 3451 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3452 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3453 KEY_CALC, /* Calculator (above numpad, P52) */ 3454 KEY_BLUETOOTH, /* Bluetooth */ 3455 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3456 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3457 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3458 KEY_PICKUP_PHONE, /* Answer incoming call */ 3459 KEY_HANGUP_PHONE, /* Decline incoming call */ 3460 }, 3461 }; 3462 3463 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3464 /* Generic maps (fallback) */ 3465 { 3466 .vendor = PCI_VENDOR_ID_IBM, 3467 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3468 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3469 }, 3470 { 3471 .vendor = PCI_VENDOR_ID_LENOVO, 3472 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3473 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3474 }, 3475 }; 3476 3477 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3478 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3479 3480 int res, i; 3481 int status; 3482 int hkeyv; 3483 bool radiosw_state = false; 3484 bool tabletsw_state = false; 3485 3486 unsigned long quirks; 3487 unsigned long keymap_id; 3488 3489 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3490 "initializing hotkey subdriver\n"); 3491 3492 BUG_ON(!tpacpi_inputdev); 3493 BUG_ON(tpacpi_inputdev->open != NULL || 3494 tpacpi_inputdev->close != NULL); 3495 3496 TPACPI_ACPIHANDLE_INIT(hkey); 3497 mutex_init(&hotkey_mutex); 3498 3499 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3500 mutex_init(&hotkey_thread_data_mutex); 3501 #endif 3502 3503 /* hotkey not supported on 570 */ 3504 tp_features.hotkey = hkey_handle != NULL; 3505 3506 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3507 "hotkeys are %s\n", 3508 str_supported(tp_features.hotkey)); 3509 3510 if (!tp_features.hotkey) 3511 return 1; 3512 3513 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3514 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3515 3516 tpacpi_disable_brightness_delay(); 3517 3518 /* MUST have enough space for all attributes to be added to 3519 * hotkey_dev_attributes */ 3520 hotkey_dev_attributes = create_attr_set( 3521 ARRAY_SIZE(hotkey_attributes) + 2, 3522 NULL); 3523 if (!hotkey_dev_attributes) 3524 return -ENOMEM; 3525 res = add_many_to_attr_set(hotkey_dev_attributes, 3526 hotkey_attributes, 3527 ARRAY_SIZE(hotkey_attributes)); 3528 if (res) 3529 goto err_exit; 3530 3531 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3532 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3533 for HKEY interface version 0x100 */ 3534 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3535 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3536 "firmware HKEY interface version: 0x%x\n", 3537 hkeyv); 3538 3539 switch (hkeyv >> 8) { 3540 case 1: 3541 /* 3542 * MHKV 0x100 in A31, R40, R40e, 3543 * T4x, X31, and later 3544 */ 3545 3546 /* Paranoia check AND init hotkey_all_mask */ 3547 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3548 "MHKA", "qd")) { 3549 pr_err("missing MHKA handler, please report this to %s\n", 3550 TPACPI_MAIL); 3551 /* Fallback: pre-init for FN+F3,F4,F12 */ 3552 hotkey_all_mask = 0x080cU; 3553 } else { 3554 tp_features.hotkey_mask = 1; 3555 } 3556 break; 3557 3558 case 2: 3559 /* 3560 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3561 */ 3562 3563 /* Paranoia check AND init hotkey_all_mask */ 3564 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3565 "MHKA", "dd", 1)) { 3566 pr_err("missing MHKA handler, please report this to %s\n", 3567 TPACPI_MAIL); 3568 /* Fallback: pre-init for FN+F3,F4,F12 */ 3569 hotkey_all_mask = 0x080cU; 3570 } else { 3571 tp_features.hotkey_mask = 1; 3572 } 3573 3574 /* 3575 * Check if we have an adaptive keyboard, like on the 3576 * Lenovo Carbon X1 2014 (2nd Gen). 3577 */ 3578 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3579 "MHKA", "dd", 2)) { 3580 if (hotkey_adaptive_all_mask != 0) { 3581 tp_features.has_adaptive_kbd = true; 3582 res = sysfs_create_group( 3583 &tpacpi_pdev->dev.kobj, 3584 &adaptive_kbd_attr_group); 3585 if (res) 3586 goto err_exit; 3587 } 3588 } else { 3589 tp_features.has_adaptive_kbd = false; 3590 hotkey_adaptive_all_mask = 0x0U; 3591 } 3592 break; 3593 3594 default: 3595 pr_err("unknown version of the HKEY interface: 0x%x\n", 3596 hkeyv); 3597 pr_err("please report this to %s\n", TPACPI_MAIL); 3598 break; 3599 } 3600 } 3601 3602 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3603 "hotkey masks are %s\n", 3604 str_supported(tp_features.hotkey_mask)); 3605 3606 /* Init hotkey_all_mask if not initialized yet */ 3607 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3608 (quirks & TPACPI_HK_Q_INIMASK)) 3609 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3610 3611 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3612 if (tp_features.hotkey_mask) { 3613 /* hotkey_source_mask *must* be zero for 3614 * the first hotkey_mask_get to return hotkey_orig_mask */ 3615 res = hotkey_mask_get(); 3616 if (res) 3617 goto err_exit; 3618 3619 hotkey_orig_mask = hotkey_acpi_mask; 3620 } else { 3621 hotkey_orig_mask = hotkey_all_mask; 3622 hotkey_acpi_mask = hotkey_all_mask; 3623 } 3624 3625 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3626 if (dbg_wlswemul) { 3627 tp_features.hotkey_wlsw = 1; 3628 radiosw_state = !!tpacpi_wlsw_emulstate; 3629 pr_info("radio switch emulation enabled\n"); 3630 } else 3631 #endif 3632 /* Not all thinkpads have a hardware radio switch */ 3633 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3634 tp_features.hotkey_wlsw = 1; 3635 radiosw_state = !!status; 3636 pr_info("radio switch found; radios are %s\n", 3637 enabled(status, 0)); 3638 } 3639 if (tp_features.hotkey_wlsw) 3640 res = add_to_attr_set(hotkey_dev_attributes, 3641 &dev_attr_hotkey_radio_sw.attr); 3642 3643 res = hotkey_init_tablet_mode(); 3644 if (res < 0) 3645 goto err_exit; 3646 3647 tabletsw_state = res; 3648 3649 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3650 &tpacpi_pdev->dev.kobj); 3651 if (res) 3652 goto err_exit; 3653 3654 /* Set up key map */ 3655 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3656 ARRAY_SIZE(tpacpi_keymap_qtable)); 3657 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3658 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3659 "using keymap number %lu\n", keymap_id); 3660 3661 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3662 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3663 if (!hotkey_keycode_map) { 3664 pr_err("failed to allocate memory for key map\n"); 3665 res = -ENOMEM; 3666 goto err_exit; 3667 } 3668 3669 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3670 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3671 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3672 tpacpi_inputdev->keycode = hotkey_keycode_map; 3673 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3674 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3675 input_set_capability(tpacpi_inputdev, EV_KEY, 3676 hotkey_keycode_map[i]); 3677 } else { 3678 if (i < sizeof(hotkey_reserved_mask)*8) 3679 hotkey_reserved_mask |= 1 << i; 3680 } 3681 } 3682 3683 if (tp_features.hotkey_wlsw) { 3684 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3685 input_report_switch(tpacpi_inputdev, 3686 SW_RFKILL_ALL, radiosw_state); 3687 } 3688 if (tp_features.hotkey_tablet) { 3689 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3690 input_report_switch(tpacpi_inputdev, 3691 SW_TABLET_MODE, tabletsw_state); 3692 } 3693 3694 /* Do not issue duplicate brightness change events to 3695 * userspace. tpacpi_detect_brightness_capabilities() must have 3696 * been called before this point */ 3697 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3698 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3699 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3700 3701 /* Disable brightness up/down on Lenovo thinkpads when 3702 * ACPI is handling them, otherwise it is plain impossible 3703 * for userspace to do something even remotely sane */ 3704 hotkey_reserved_mask |= 3705 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3706 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3707 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3708 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3709 } 3710 3711 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3712 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3713 & ~hotkey_all_mask 3714 & ~hotkey_reserved_mask; 3715 3716 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3717 "hotkey source mask 0x%08x, polling freq %u\n", 3718 hotkey_source_mask, hotkey_poll_freq); 3719 #endif 3720 3721 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3722 "enabling firmware HKEY event interface...\n"); 3723 res = hotkey_status_set(true); 3724 if (res) { 3725 hotkey_exit(); 3726 return res; 3727 } 3728 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3729 | hotkey_driver_mask) 3730 & ~hotkey_source_mask); 3731 if (res < 0 && res != -ENXIO) { 3732 hotkey_exit(); 3733 return res; 3734 } 3735 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3736 & ~hotkey_reserved_mask; 3737 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3738 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3739 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3740 3741 tpacpi_inputdev->open = &hotkey_inputdev_open; 3742 tpacpi_inputdev->close = &hotkey_inputdev_close; 3743 3744 hotkey_poll_setup_safe(true); 3745 3746 return 0; 3747 3748 err_exit: 3749 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3750 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3751 &adaptive_kbd_attr_group); 3752 3753 hotkey_dev_attributes = NULL; 3754 3755 return (res < 0) ? res : 1; 3756 } 3757 3758 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3759 * mode, Web conference mode, Function mode and Lay-flat mode. 3760 * We support Home mode and Function mode currently. 3761 * 3762 * Will consider support rest of modes in future. 3763 * 3764 */ 3765 static const int adaptive_keyboard_modes[] = { 3766 HOME_MODE, 3767 /* WEB_BROWSER_MODE = 2, 3768 WEB_CONFERENCE_MODE = 3, */ 3769 FUNCTION_MODE 3770 }; 3771 3772 #define DFR_CHANGE_ROW 0x101 3773 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3774 #define FIRST_ADAPTIVE_KEY 0x103 3775 3776 /* press Fn key a while second, it will switch to Function Mode. Then 3777 * release Fn key, previous mode be restored. 3778 */ 3779 static bool adaptive_keyboard_mode_is_saved; 3780 static int adaptive_keyboard_prev_mode; 3781 3782 static int adaptive_keyboard_get_mode(void) 3783 { 3784 int mode = 0; 3785 3786 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3787 pr_err("Cannot read adaptive keyboard mode\n"); 3788 return -EIO; 3789 } 3790 3791 return mode; 3792 } 3793 3794 static int adaptive_keyboard_set_mode(int new_mode) 3795 { 3796 if (new_mode < 0 || 3797 new_mode > LAYFLAT_MODE) 3798 return -EINVAL; 3799 3800 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3801 pr_err("Cannot set adaptive keyboard mode\n"); 3802 return -EIO; 3803 } 3804 3805 return 0; 3806 } 3807 3808 static int adaptive_keyboard_get_next_mode(int mode) 3809 { 3810 size_t i; 3811 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3812 3813 for (i = 0; i <= max_mode; i++) { 3814 if (adaptive_keyboard_modes[i] == mode) 3815 break; 3816 } 3817 3818 if (i >= max_mode) 3819 i = 0; 3820 else 3821 i++; 3822 3823 return adaptive_keyboard_modes[i]; 3824 } 3825 3826 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3827 { 3828 int current_mode = 0; 3829 int new_mode = 0; 3830 int keycode; 3831 3832 switch (scancode) { 3833 case DFR_CHANGE_ROW: 3834 if (adaptive_keyboard_mode_is_saved) { 3835 new_mode = adaptive_keyboard_prev_mode; 3836 adaptive_keyboard_mode_is_saved = false; 3837 } else { 3838 current_mode = adaptive_keyboard_get_mode(); 3839 if (current_mode < 0) 3840 return false; 3841 new_mode = adaptive_keyboard_get_next_mode( 3842 current_mode); 3843 } 3844 3845 if (adaptive_keyboard_set_mode(new_mode) < 0) 3846 return false; 3847 3848 return true; 3849 3850 case DFR_SHOW_QUICKVIEW_ROW: 3851 current_mode = adaptive_keyboard_get_mode(); 3852 if (current_mode < 0) 3853 return false; 3854 3855 adaptive_keyboard_prev_mode = current_mode; 3856 adaptive_keyboard_mode_is_saved = true; 3857 3858 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3859 return false; 3860 return true; 3861 3862 default: 3863 if (scancode < FIRST_ADAPTIVE_KEY || 3864 scancode >= FIRST_ADAPTIVE_KEY + 3865 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3866 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3867 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3868 scancode); 3869 return false; 3870 } 3871 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3872 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3873 if (keycode != KEY_RESERVED) { 3874 mutex_lock(&tpacpi_inputdev_send_mutex); 3875 3876 input_report_key(tpacpi_inputdev, keycode, 1); 3877 input_sync(tpacpi_inputdev); 3878 3879 input_report_key(tpacpi_inputdev, keycode, 0); 3880 input_sync(tpacpi_inputdev); 3881 3882 mutex_unlock(&tpacpi_inputdev_send_mutex); 3883 } 3884 return true; 3885 } 3886 } 3887 3888 static bool hotkey_notify_hotkey(const u32 hkey, 3889 bool *send_acpi_ev, 3890 bool *ignore_acpi_ev) 3891 { 3892 /* 0x1000-0x1FFF: key presses */ 3893 unsigned int scancode = hkey & 0xfff; 3894 *send_acpi_ev = true; 3895 *ignore_acpi_ev = false; 3896 3897 /* 3898 * Original events are in the 0x10XX range, the adaptive keyboard 3899 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3900 * models, additional keys are emitted through 0x13XX. 3901 */ 3902 switch ((hkey >> 8) & 0xf) { 3903 case 0: 3904 if (scancode > 0 && 3905 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3906 /* HKEY event 0x1001 is scancode 0x00 */ 3907 scancode--; 3908 if (!(hotkey_source_mask & (1 << scancode))) { 3909 tpacpi_input_send_key_masked(scancode); 3910 *send_acpi_ev = false; 3911 } else { 3912 *ignore_acpi_ev = true; 3913 } 3914 return true; 3915 } 3916 break; 3917 3918 case 1: 3919 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3920 3921 case 3: 3922 /* Extended keycodes start at 0x300 and our offset into the map 3923 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3924 * will be positive, but might not be in the correct range. 3925 */ 3926 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3927 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3928 scancode < TPACPI_HOTKEY_MAP_LEN) { 3929 tpacpi_input_send_key(scancode); 3930 return true; 3931 } 3932 break; 3933 } 3934 3935 return false; 3936 } 3937 3938 static bool hotkey_notify_wakeup(const u32 hkey, 3939 bool *send_acpi_ev, 3940 bool *ignore_acpi_ev) 3941 { 3942 /* 0x2000-0x2FFF: Wakeup reason */ 3943 *send_acpi_ev = true; 3944 *ignore_acpi_ev = false; 3945 3946 switch (hkey) { 3947 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3948 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3949 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3950 *ignore_acpi_ev = true; 3951 break; 3952 3953 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3954 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3955 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3956 *ignore_acpi_ev = true; 3957 break; 3958 3959 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3960 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3961 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3962 /* how to auto-heal: */ 3963 /* 2313: woke up from S3, go to S4/S5 */ 3964 /* 2413: woke up from S4, go to S5 */ 3965 break; 3966 3967 default: 3968 return false; 3969 } 3970 3971 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3972 pr_info("woke up due to a hot-unplug request...\n"); 3973 hotkey_wakeup_reason_notify_change(); 3974 } 3975 return true; 3976 } 3977 3978 static bool hotkey_notify_dockevent(const u32 hkey, 3979 bool *send_acpi_ev, 3980 bool *ignore_acpi_ev) 3981 { 3982 /* 0x4000-0x4FFF: dock-related events */ 3983 *send_acpi_ev = true; 3984 *ignore_acpi_ev = false; 3985 3986 switch (hkey) { 3987 case TP_HKEY_EV_UNDOCK_ACK: 3988 /* ACPI undock operation completed after wakeup */ 3989 hotkey_autosleep_ack = 1; 3990 pr_info("undocked\n"); 3991 hotkey_wakeup_hotunplug_complete_notify_change(); 3992 return true; 3993 3994 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3995 pr_info("docked into hotplug port replicator\n"); 3996 return true; 3997 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3998 pr_info("undocked from hotplug port replicator\n"); 3999 return true; 4000 4001 /* 4002 * Deliberately ignore attaching and detaching the keybord cover to avoid 4003 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 4004 * to userspace. 4005 * 4006 * Please refer to the following thread for more information and a preliminary 4007 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 4008 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 4009 * the Pico cartridge dock module: 4010 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 4011 */ 4012 case TP_HKEY_EV_KBD_COVER_ATTACH: 4013 case TP_HKEY_EV_KBD_COVER_DETACH: 4014 *send_acpi_ev = false; 4015 *ignore_acpi_ev = true; 4016 return true; 4017 4018 default: 4019 return false; 4020 } 4021 } 4022 4023 static bool hotkey_notify_usrevent(const u32 hkey, 4024 bool *send_acpi_ev, 4025 bool *ignore_acpi_ev) 4026 { 4027 /* 0x5000-0x5FFF: human interface helpers */ 4028 *send_acpi_ev = true; 4029 *ignore_acpi_ev = false; 4030 4031 switch (hkey) { 4032 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 4033 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 4034 return true; 4035 4036 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4037 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4038 tpacpi_input_send_tabletsw(); 4039 hotkey_tablet_mode_notify_change(); 4040 *send_acpi_ev = false; 4041 return true; 4042 4043 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4044 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4045 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4046 /* do not propagate these events */ 4047 *ignore_acpi_ev = true; 4048 return true; 4049 4050 default: 4051 return false; 4052 } 4053 } 4054 4055 static void thermal_dump_all_sensors(void); 4056 static void palmsensor_refresh(void); 4057 4058 static bool hotkey_notify_6xxx(const u32 hkey, 4059 bool *send_acpi_ev, 4060 bool *ignore_acpi_ev) 4061 { 4062 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4063 *send_acpi_ev = true; 4064 *ignore_acpi_ev = false; 4065 4066 switch (hkey) { 4067 case TP_HKEY_EV_THM_TABLE_CHANGED: 4068 pr_debug("EC reports: Thermal Table has changed\n"); 4069 /* recommended action: do nothing, we don't have 4070 * Lenovo ATM information */ 4071 return true; 4072 case TP_HKEY_EV_THM_CSM_COMPLETED: 4073 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 4074 /* Thermal event - pass on to event handler */ 4075 tpacpi_driver_event(hkey); 4076 return true; 4077 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 4078 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 4079 /* recommended action: do nothing, we don't have 4080 * Lenovo ATM information */ 4081 return true; 4082 case TP_HKEY_EV_ALARM_BAT_HOT: 4083 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4084 /* recommended action: warn user through gui */ 4085 break; 4086 case TP_HKEY_EV_ALARM_BAT_XHOT: 4087 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4088 /* recommended action: immediate sleep/hibernate */ 4089 break; 4090 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4091 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4092 /* recommended action: warn user through gui, that */ 4093 /* some internal component is too hot */ 4094 break; 4095 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4096 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4097 /* recommended action: immediate sleep/hibernate */ 4098 break; 4099 case TP_HKEY_EV_AC_CHANGED: 4100 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4101 * AC status changed; can be triggered by plugging or 4102 * unplugging AC adapter, docking or undocking. */ 4103 4104 fallthrough; 4105 4106 case TP_HKEY_EV_KEY_NUMLOCK: 4107 case TP_HKEY_EV_KEY_FN: 4108 /* key press events, we just ignore them as long as the EC 4109 * is still reporting them in the normal keyboard stream */ 4110 *send_acpi_ev = false; 4111 *ignore_acpi_ev = true; 4112 return true; 4113 4114 case TP_HKEY_EV_KEY_FN_ESC: 4115 /* Get the media key status to force the status LED to update */ 4116 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 4117 *send_acpi_ev = false; 4118 *ignore_acpi_ev = true; 4119 return true; 4120 4121 case TP_HKEY_EV_TABLET_CHANGED: 4122 tpacpi_input_send_tabletsw(); 4123 hotkey_tablet_mode_notify_change(); 4124 *send_acpi_ev = false; 4125 return true; 4126 4127 case TP_HKEY_EV_PALM_DETECTED: 4128 case TP_HKEY_EV_PALM_UNDETECTED: 4129 /* palm detected - pass on to event handler */ 4130 palmsensor_refresh(); 4131 return true; 4132 4133 default: 4134 /* report simply as unknown, no sensor dump */ 4135 return false; 4136 } 4137 4138 thermal_dump_all_sensors(); 4139 return true; 4140 } 4141 4142 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4143 { 4144 u32 hkey; 4145 bool send_acpi_ev; 4146 bool ignore_acpi_ev; 4147 bool known_ev; 4148 4149 if (event != 0x80) { 4150 pr_err("unknown HKEY notification event %d\n", event); 4151 /* forward it to userspace, maybe it knows how to handle it */ 4152 acpi_bus_generate_netlink_event( 4153 ibm->acpi->device->pnp.device_class, 4154 dev_name(&ibm->acpi->device->dev), 4155 event, 0); 4156 return; 4157 } 4158 4159 while (1) { 4160 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4161 pr_err("failed to retrieve HKEY event\n"); 4162 return; 4163 } 4164 4165 if (hkey == 0) { 4166 /* queue empty */ 4167 return; 4168 } 4169 4170 send_acpi_ev = true; 4171 ignore_acpi_ev = false; 4172 4173 switch (hkey >> 12) { 4174 case 1: 4175 /* 0x1000-0x1FFF: key presses */ 4176 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4177 &ignore_acpi_ev); 4178 break; 4179 case 2: 4180 /* 0x2000-0x2FFF: Wakeup reason */ 4181 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4182 &ignore_acpi_ev); 4183 break; 4184 case 3: 4185 /* 0x3000-0x3FFF: bay-related wakeups */ 4186 switch (hkey) { 4187 case TP_HKEY_EV_BAYEJ_ACK: 4188 hotkey_autosleep_ack = 1; 4189 pr_info("bay ejected\n"); 4190 hotkey_wakeup_hotunplug_complete_notify_change(); 4191 known_ev = true; 4192 break; 4193 case TP_HKEY_EV_OPTDRV_EJ: 4194 /* FIXME: kick libata if SATA link offline */ 4195 known_ev = true; 4196 break; 4197 default: 4198 known_ev = false; 4199 } 4200 break; 4201 case 4: 4202 /* 0x4000-0x4FFF: dock-related events */ 4203 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4204 &ignore_acpi_ev); 4205 break; 4206 case 5: 4207 /* 0x5000-0x5FFF: human interface helpers */ 4208 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4209 &ignore_acpi_ev); 4210 break; 4211 case 6: 4212 /* 0x6000-0x6FFF: thermal alarms/notices and 4213 * keyboard events */ 4214 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4215 &ignore_acpi_ev); 4216 break; 4217 case 7: 4218 /* 0x7000-0x7FFF: misc */ 4219 if (tp_features.hotkey_wlsw && 4220 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4221 tpacpi_send_radiosw_update(); 4222 send_acpi_ev = 0; 4223 known_ev = true; 4224 break; 4225 } 4226 fallthrough; /* to default */ 4227 default: 4228 known_ev = false; 4229 } 4230 if (!known_ev) { 4231 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4232 pr_notice("please report the conditions when this event happened to %s\n", 4233 TPACPI_MAIL); 4234 } 4235 4236 /* netlink events */ 4237 if (!ignore_acpi_ev && send_acpi_ev) { 4238 acpi_bus_generate_netlink_event( 4239 ibm->acpi->device->pnp.device_class, 4240 dev_name(&ibm->acpi->device->dev), 4241 event, hkey); 4242 } 4243 } 4244 } 4245 4246 static void hotkey_suspend(void) 4247 { 4248 /* Do these on suspend, we get the events on early resume! */ 4249 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4250 hotkey_autosleep_ack = 0; 4251 4252 /* save previous mode of adaptive keyboard of X1 Carbon */ 4253 if (tp_features.has_adaptive_kbd) { 4254 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4255 "GTRW", "dd", 0)) { 4256 pr_err("Cannot read adaptive keyboard mode.\n"); 4257 } 4258 } 4259 } 4260 4261 static void hotkey_resume(void) 4262 { 4263 tpacpi_disable_brightness_delay(); 4264 4265 if (hotkey_status_set(true) < 0 || 4266 hotkey_mask_set(hotkey_acpi_mask) < 0) 4267 pr_err("error while attempting to reset the event firmware interface\n"); 4268 4269 tpacpi_send_radiosw_update(); 4270 tpacpi_input_send_tabletsw(); 4271 hotkey_tablet_mode_notify_change(); 4272 hotkey_wakeup_reason_notify_change(); 4273 hotkey_wakeup_hotunplug_complete_notify_change(); 4274 hotkey_poll_setup_safe(false); 4275 4276 /* restore previous mode of adapive keyboard of X1 Carbon */ 4277 if (tp_features.has_adaptive_kbd) { 4278 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4279 adaptive_keyboard_prev_mode)) { 4280 pr_err("Cannot set adaptive keyboard mode.\n"); 4281 } 4282 } 4283 } 4284 4285 /* procfs -------------------------------------------------------------- */ 4286 static int hotkey_read(struct seq_file *m) 4287 { 4288 int res, status; 4289 4290 if (!tp_features.hotkey) { 4291 seq_printf(m, "status:\t\tnot supported\n"); 4292 return 0; 4293 } 4294 4295 if (mutex_lock_killable(&hotkey_mutex)) 4296 return -ERESTARTSYS; 4297 res = hotkey_status_get(&status); 4298 if (!res) 4299 res = hotkey_mask_get(); 4300 mutex_unlock(&hotkey_mutex); 4301 if (res) 4302 return res; 4303 4304 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4305 if (hotkey_all_mask) { 4306 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4307 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4308 } else { 4309 seq_printf(m, "mask:\t\tnot supported\n"); 4310 seq_printf(m, "commands:\tenable, disable, reset\n"); 4311 } 4312 4313 return 0; 4314 } 4315 4316 static void hotkey_enabledisable_warn(bool enable) 4317 { 4318 tpacpi_log_usertask("procfs hotkey enable/disable"); 4319 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4320 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4321 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4322 } 4323 4324 static int hotkey_write(char *buf) 4325 { 4326 int res; 4327 u32 mask; 4328 char *cmd; 4329 4330 if (!tp_features.hotkey) 4331 return -ENODEV; 4332 4333 if (mutex_lock_killable(&hotkey_mutex)) 4334 return -ERESTARTSYS; 4335 4336 mask = hotkey_user_mask; 4337 4338 res = 0; 4339 while ((cmd = strsep(&buf, ","))) { 4340 if (strlencmp(cmd, "enable") == 0) { 4341 hotkey_enabledisable_warn(1); 4342 } else if (strlencmp(cmd, "disable") == 0) { 4343 hotkey_enabledisable_warn(0); 4344 res = -EPERM; 4345 } else if (strlencmp(cmd, "reset") == 0) { 4346 mask = (hotkey_all_mask | hotkey_source_mask) 4347 & ~hotkey_reserved_mask; 4348 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4349 /* mask set */ 4350 } else if (sscanf(cmd, "%x", &mask) == 1) { 4351 /* mask set */ 4352 } else { 4353 res = -EINVAL; 4354 goto errexit; 4355 } 4356 } 4357 4358 if (!res) { 4359 tpacpi_disclose_usertask("procfs hotkey", 4360 "set mask to 0x%08x\n", mask); 4361 res = hotkey_user_mask_set(mask); 4362 } 4363 4364 errexit: 4365 mutex_unlock(&hotkey_mutex); 4366 return res; 4367 } 4368 4369 static const struct acpi_device_id ibm_htk_device_ids[] = { 4370 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4371 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4372 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4373 {"", 0}, 4374 }; 4375 4376 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4377 .hid = ibm_htk_device_ids, 4378 .notify = hotkey_notify, 4379 .handle = &hkey_handle, 4380 .type = ACPI_DEVICE_NOTIFY, 4381 }; 4382 4383 static struct ibm_struct hotkey_driver_data = { 4384 .name = "hotkey", 4385 .read = hotkey_read, 4386 .write = hotkey_write, 4387 .exit = hotkey_exit, 4388 .resume = hotkey_resume, 4389 .suspend = hotkey_suspend, 4390 .acpi = &ibm_hotkey_acpidriver, 4391 }; 4392 4393 /************************************************************************* 4394 * Bluetooth subdriver 4395 */ 4396 4397 enum { 4398 /* ACPI GBDC/SBDC bits */ 4399 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4400 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4401 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4402 0 = disable, 1 = enable */ 4403 }; 4404 4405 enum { 4406 /* ACPI \BLTH commands */ 4407 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4408 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4409 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4410 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4411 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4412 }; 4413 4414 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4415 4416 static int bluetooth_get_status(void) 4417 { 4418 int status; 4419 4420 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4421 if (dbg_bluetoothemul) 4422 return (tpacpi_bluetooth_emulstate) ? 4423 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4424 #endif 4425 4426 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4427 return -EIO; 4428 4429 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4430 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4431 } 4432 4433 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4434 { 4435 int status; 4436 4437 vdbg_printk(TPACPI_DBG_RFKILL, 4438 "will attempt to %s bluetooth\n", 4439 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4440 4441 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4442 if (dbg_bluetoothemul) { 4443 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4444 return 0; 4445 } 4446 #endif 4447 4448 if (state == TPACPI_RFK_RADIO_ON) 4449 status = TP_ACPI_BLUETOOTH_RADIOSSW 4450 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4451 else 4452 status = 0; 4453 4454 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4455 return -EIO; 4456 4457 return 0; 4458 } 4459 4460 /* sysfs bluetooth enable ---------------------------------------------- */ 4461 static ssize_t bluetooth_enable_show(struct device *dev, 4462 struct device_attribute *attr, 4463 char *buf) 4464 { 4465 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4466 attr, buf); 4467 } 4468 4469 static ssize_t bluetooth_enable_store(struct device *dev, 4470 struct device_attribute *attr, 4471 const char *buf, size_t count) 4472 { 4473 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4474 attr, buf, count); 4475 } 4476 4477 static DEVICE_ATTR_RW(bluetooth_enable); 4478 4479 /* --------------------------------------------------------------------- */ 4480 4481 static struct attribute *bluetooth_attributes[] = { 4482 &dev_attr_bluetooth_enable.attr, 4483 NULL 4484 }; 4485 4486 static const struct attribute_group bluetooth_attr_group = { 4487 .attrs = bluetooth_attributes, 4488 }; 4489 4490 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4491 .get_status = bluetooth_get_status, 4492 .set_status = bluetooth_set_status, 4493 }; 4494 4495 static void bluetooth_shutdown(void) 4496 { 4497 /* Order firmware to save current state to NVRAM */ 4498 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4499 TP_ACPI_BLTH_SAVE_STATE)) 4500 pr_notice("failed to save bluetooth state to NVRAM\n"); 4501 else 4502 vdbg_printk(TPACPI_DBG_RFKILL, 4503 "bluetooth state saved to NVRAM\n"); 4504 } 4505 4506 static void bluetooth_exit(void) 4507 { 4508 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4509 &bluetooth_attr_group); 4510 4511 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4512 4513 bluetooth_shutdown(); 4514 } 4515 4516 static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4517 { 4518 .ident = "ThinkPad E485", 4519 .matches = { 4520 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4521 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4522 }, 4523 }, 4524 { 4525 .ident = "ThinkPad E585", 4526 .matches = { 4527 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4528 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4529 }, 4530 }, 4531 { 4532 .ident = "ThinkPad A285 - 20MW", 4533 .matches = { 4534 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4535 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4536 }, 4537 }, 4538 { 4539 .ident = "ThinkPad A285 - 20MX", 4540 .matches = { 4541 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4542 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4543 }, 4544 }, 4545 { 4546 .ident = "ThinkPad A485 - 20MU", 4547 .matches = { 4548 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4549 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4550 }, 4551 }, 4552 { 4553 .ident = "ThinkPad A485 - 20MV", 4554 .matches = { 4555 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4556 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4557 }, 4558 }, 4559 {} 4560 }; 4561 4562 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4563 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4564 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4565 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4566 {} 4567 }; 4568 4569 4570 static int __init have_bt_fwbug(void) 4571 { 4572 /* 4573 * Some AMD based ThinkPads have a firmware bug that calling 4574 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4575 */ 4576 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4577 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4578 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4579 return 1; 4580 } else 4581 return 0; 4582 } 4583 4584 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4585 { 4586 int res; 4587 int status = 0; 4588 4589 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4590 "initializing bluetooth subdriver\n"); 4591 4592 TPACPI_ACPIHANDLE_INIT(hkey); 4593 4594 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4595 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4596 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4597 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4598 4599 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4600 "bluetooth is %s, status 0x%02x\n", 4601 str_supported(tp_features.bluetooth), 4602 status); 4603 4604 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4605 if (dbg_bluetoothemul) { 4606 tp_features.bluetooth = 1; 4607 pr_info("bluetooth switch emulation enabled\n"); 4608 } else 4609 #endif 4610 if (tp_features.bluetooth && 4611 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4612 /* no bluetooth hardware present in system */ 4613 tp_features.bluetooth = 0; 4614 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4615 "bluetooth hardware not installed\n"); 4616 } 4617 4618 if (!tp_features.bluetooth) 4619 return 1; 4620 4621 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4622 &bluetooth_tprfk_ops, 4623 RFKILL_TYPE_BLUETOOTH, 4624 TPACPI_RFK_BLUETOOTH_SW_NAME, 4625 true); 4626 if (res) 4627 return res; 4628 4629 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4630 &bluetooth_attr_group); 4631 if (res) { 4632 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4633 return res; 4634 } 4635 4636 return 0; 4637 } 4638 4639 /* procfs -------------------------------------------------------------- */ 4640 static int bluetooth_read(struct seq_file *m) 4641 { 4642 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4643 } 4644 4645 static int bluetooth_write(char *buf) 4646 { 4647 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4648 } 4649 4650 static struct ibm_struct bluetooth_driver_data = { 4651 .name = "bluetooth", 4652 .read = bluetooth_read, 4653 .write = bluetooth_write, 4654 .exit = bluetooth_exit, 4655 .shutdown = bluetooth_shutdown, 4656 }; 4657 4658 /************************************************************************* 4659 * Wan subdriver 4660 */ 4661 4662 enum { 4663 /* ACPI GWAN/SWAN bits */ 4664 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4665 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4666 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4667 0 = disable, 1 = enable */ 4668 }; 4669 4670 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4671 4672 static int wan_get_status(void) 4673 { 4674 int status; 4675 4676 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4677 if (dbg_wwanemul) 4678 return (tpacpi_wwan_emulstate) ? 4679 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4680 #endif 4681 4682 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4683 return -EIO; 4684 4685 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4686 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4687 } 4688 4689 static int wan_set_status(enum tpacpi_rfkill_state state) 4690 { 4691 int status; 4692 4693 vdbg_printk(TPACPI_DBG_RFKILL, 4694 "will attempt to %s wwan\n", 4695 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4696 4697 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4698 if (dbg_wwanemul) { 4699 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4700 return 0; 4701 } 4702 #endif 4703 4704 if (state == TPACPI_RFK_RADIO_ON) 4705 status = TP_ACPI_WANCARD_RADIOSSW 4706 | TP_ACPI_WANCARD_RESUMECTRL; 4707 else 4708 status = 0; 4709 4710 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4711 return -EIO; 4712 4713 return 0; 4714 } 4715 4716 /* sysfs wan enable ---------------------------------------------------- */ 4717 static ssize_t wan_enable_show(struct device *dev, 4718 struct device_attribute *attr, 4719 char *buf) 4720 { 4721 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4722 attr, buf); 4723 } 4724 4725 static ssize_t wan_enable_store(struct device *dev, 4726 struct device_attribute *attr, 4727 const char *buf, size_t count) 4728 { 4729 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4730 attr, buf, count); 4731 } 4732 4733 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4734 wan_enable_show, wan_enable_store); 4735 4736 /* --------------------------------------------------------------------- */ 4737 4738 static struct attribute *wan_attributes[] = { 4739 &dev_attr_wwan_enable.attr, 4740 NULL 4741 }; 4742 4743 static const struct attribute_group wan_attr_group = { 4744 .attrs = wan_attributes, 4745 }; 4746 4747 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4748 .get_status = wan_get_status, 4749 .set_status = wan_set_status, 4750 }; 4751 4752 static void wan_shutdown(void) 4753 { 4754 /* Order firmware to save current state to NVRAM */ 4755 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4756 TP_ACPI_WGSV_SAVE_STATE)) 4757 pr_notice("failed to save WWAN state to NVRAM\n"); 4758 else 4759 vdbg_printk(TPACPI_DBG_RFKILL, 4760 "WWAN state saved to NVRAM\n"); 4761 } 4762 4763 static void wan_exit(void) 4764 { 4765 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4766 &wan_attr_group); 4767 4768 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4769 4770 wan_shutdown(); 4771 } 4772 4773 static int __init wan_init(struct ibm_init_struct *iibm) 4774 { 4775 int res; 4776 int status = 0; 4777 4778 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4779 "initializing wan subdriver\n"); 4780 4781 TPACPI_ACPIHANDLE_INIT(hkey); 4782 4783 tp_features.wan = hkey_handle && 4784 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4785 4786 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4787 "wan is %s, status 0x%02x\n", 4788 str_supported(tp_features.wan), 4789 status); 4790 4791 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4792 if (dbg_wwanemul) { 4793 tp_features.wan = 1; 4794 pr_info("wwan switch emulation enabled\n"); 4795 } else 4796 #endif 4797 if (tp_features.wan && 4798 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4799 /* no wan hardware present in system */ 4800 tp_features.wan = 0; 4801 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4802 "wan hardware not installed\n"); 4803 } 4804 4805 if (!tp_features.wan) 4806 return 1; 4807 4808 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4809 &wan_tprfk_ops, 4810 RFKILL_TYPE_WWAN, 4811 TPACPI_RFK_WWAN_SW_NAME, 4812 true); 4813 if (res) 4814 return res; 4815 4816 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4817 &wan_attr_group); 4818 4819 if (res) { 4820 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4821 return res; 4822 } 4823 4824 return 0; 4825 } 4826 4827 /* procfs -------------------------------------------------------------- */ 4828 static int wan_read(struct seq_file *m) 4829 { 4830 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4831 } 4832 4833 static int wan_write(char *buf) 4834 { 4835 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4836 } 4837 4838 static struct ibm_struct wan_driver_data = { 4839 .name = "wan", 4840 .read = wan_read, 4841 .write = wan_write, 4842 .exit = wan_exit, 4843 .shutdown = wan_shutdown, 4844 }; 4845 4846 /************************************************************************* 4847 * UWB subdriver 4848 */ 4849 4850 enum { 4851 /* ACPI GUWB/SUWB bits */ 4852 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4853 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4854 }; 4855 4856 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4857 4858 static int uwb_get_status(void) 4859 { 4860 int status; 4861 4862 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4863 if (dbg_uwbemul) 4864 return (tpacpi_uwb_emulstate) ? 4865 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4866 #endif 4867 4868 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4869 return -EIO; 4870 4871 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4872 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4873 } 4874 4875 static int uwb_set_status(enum tpacpi_rfkill_state state) 4876 { 4877 int status; 4878 4879 vdbg_printk(TPACPI_DBG_RFKILL, 4880 "will attempt to %s UWB\n", 4881 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4882 4883 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4884 if (dbg_uwbemul) { 4885 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4886 return 0; 4887 } 4888 #endif 4889 4890 if (state == TPACPI_RFK_RADIO_ON) 4891 status = TP_ACPI_UWB_RADIOSSW; 4892 else 4893 status = 0; 4894 4895 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4896 return -EIO; 4897 4898 return 0; 4899 } 4900 4901 /* --------------------------------------------------------------------- */ 4902 4903 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4904 .get_status = uwb_get_status, 4905 .set_status = uwb_set_status, 4906 }; 4907 4908 static void uwb_exit(void) 4909 { 4910 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4911 } 4912 4913 static int __init uwb_init(struct ibm_init_struct *iibm) 4914 { 4915 int res; 4916 int status = 0; 4917 4918 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4919 "initializing uwb subdriver\n"); 4920 4921 TPACPI_ACPIHANDLE_INIT(hkey); 4922 4923 tp_features.uwb = hkey_handle && 4924 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4925 4926 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4927 "uwb is %s, status 0x%02x\n", 4928 str_supported(tp_features.uwb), 4929 status); 4930 4931 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4932 if (dbg_uwbemul) { 4933 tp_features.uwb = 1; 4934 pr_info("uwb switch emulation enabled\n"); 4935 } else 4936 #endif 4937 if (tp_features.uwb && 4938 !(status & TP_ACPI_UWB_HWPRESENT)) { 4939 /* no uwb hardware present in system */ 4940 tp_features.uwb = 0; 4941 dbg_printk(TPACPI_DBG_INIT, 4942 "uwb hardware not installed\n"); 4943 } 4944 4945 if (!tp_features.uwb) 4946 return 1; 4947 4948 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4949 &uwb_tprfk_ops, 4950 RFKILL_TYPE_UWB, 4951 TPACPI_RFK_UWB_SW_NAME, 4952 false); 4953 return res; 4954 } 4955 4956 static struct ibm_struct uwb_driver_data = { 4957 .name = "uwb", 4958 .exit = uwb_exit, 4959 .flags.experimental = 1, 4960 }; 4961 4962 /************************************************************************* 4963 * Video subdriver 4964 */ 4965 4966 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4967 4968 enum video_access_mode { 4969 TPACPI_VIDEO_NONE = 0, 4970 TPACPI_VIDEO_570, /* 570 */ 4971 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4972 TPACPI_VIDEO_NEW, /* all others */ 4973 }; 4974 4975 enum { /* video status flags, based on VIDEO_570 */ 4976 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4977 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4978 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4979 }; 4980 4981 enum { /* TPACPI_VIDEO_570 constants */ 4982 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4983 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4984 * video_status_flags */ 4985 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4986 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4987 }; 4988 4989 static enum video_access_mode video_supported; 4990 static int video_orig_autosw; 4991 4992 static int video_autosw_get(void); 4993 static int video_autosw_set(int enable); 4994 4995 TPACPI_HANDLE(vid, root, 4996 "\\_SB.PCI.AGP.VGA", /* 570 */ 4997 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4998 "\\_SB.PCI0.VID0", /* 770e */ 4999 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 5000 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 5001 "\\_SB.PCI0.AGP.VID", /* all others */ 5002 ); /* R30, R31 */ 5003 5004 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 5005 5006 static int __init video_init(struct ibm_init_struct *iibm) 5007 { 5008 int ivga; 5009 5010 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 5011 5012 TPACPI_ACPIHANDLE_INIT(vid); 5013 if (tpacpi_is_ibm()) 5014 TPACPI_ACPIHANDLE_INIT(vid2); 5015 5016 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 5017 /* G41, assume IVGA doesn't change */ 5018 vid_handle = vid2_handle; 5019 5020 if (!vid_handle) 5021 /* video switching not supported on R30, R31 */ 5022 video_supported = TPACPI_VIDEO_NONE; 5023 else if (tpacpi_is_ibm() && 5024 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 5025 /* 570 */ 5026 video_supported = TPACPI_VIDEO_570; 5027 else if (tpacpi_is_ibm() && 5028 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 5029 /* 600e/x, 770e, 770x */ 5030 video_supported = TPACPI_VIDEO_770; 5031 else 5032 /* all others */ 5033 video_supported = TPACPI_VIDEO_NEW; 5034 5035 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 5036 str_supported(video_supported != TPACPI_VIDEO_NONE), 5037 video_supported); 5038 5039 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 5040 } 5041 5042 static void video_exit(void) 5043 { 5044 dbg_printk(TPACPI_DBG_EXIT, 5045 "restoring original video autoswitch mode\n"); 5046 if (video_autosw_set(video_orig_autosw)) 5047 pr_err("error while trying to restore original video autoswitch mode\n"); 5048 } 5049 5050 static int video_outputsw_get(void) 5051 { 5052 int status = 0; 5053 int i; 5054 5055 switch (video_supported) { 5056 case TPACPI_VIDEO_570: 5057 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5058 TP_ACPI_VIDEO_570_PHSCMD)) 5059 return -EIO; 5060 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5061 break; 5062 case TPACPI_VIDEO_770: 5063 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5064 return -EIO; 5065 if (i) 5066 status |= TP_ACPI_VIDEO_S_LCD; 5067 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5068 return -EIO; 5069 if (i) 5070 status |= TP_ACPI_VIDEO_S_CRT; 5071 break; 5072 case TPACPI_VIDEO_NEW: 5073 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5074 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5075 return -EIO; 5076 if (i) 5077 status |= TP_ACPI_VIDEO_S_CRT; 5078 5079 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5080 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5081 return -EIO; 5082 if (i) 5083 status |= TP_ACPI_VIDEO_S_LCD; 5084 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5085 return -EIO; 5086 if (i) 5087 status |= TP_ACPI_VIDEO_S_DVI; 5088 break; 5089 default: 5090 return -ENOSYS; 5091 } 5092 5093 return status; 5094 } 5095 5096 static int video_outputsw_set(int status) 5097 { 5098 int autosw; 5099 int res = 0; 5100 5101 switch (video_supported) { 5102 case TPACPI_VIDEO_570: 5103 res = acpi_evalf(NULL, NULL, 5104 "\\_SB.PHS2", "vdd", 5105 TP_ACPI_VIDEO_570_PHS2CMD, 5106 status | TP_ACPI_VIDEO_570_PHS2SET); 5107 break; 5108 case TPACPI_VIDEO_770: 5109 autosw = video_autosw_get(); 5110 if (autosw < 0) 5111 return autosw; 5112 5113 res = video_autosw_set(1); 5114 if (res) 5115 return res; 5116 res = acpi_evalf(vid_handle, NULL, 5117 "ASWT", "vdd", status * 0x100, 0); 5118 if (!autosw && video_autosw_set(autosw)) { 5119 pr_err("video auto-switch left enabled due to error\n"); 5120 return -EIO; 5121 } 5122 break; 5123 case TPACPI_VIDEO_NEW: 5124 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5125 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5126 break; 5127 default: 5128 return -ENOSYS; 5129 } 5130 5131 return (res) ? 0 : -EIO; 5132 } 5133 5134 static int video_autosw_get(void) 5135 { 5136 int autosw = 0; 5137 5138 switch (video_supported) { 5139 case TPACPI_VIDEO_570: 5140 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5141 return -EIO; 5142 break; 5143 case TPACPI_VIDEO_770: 5144 case TPACPI_VIDEO_NEW: 5145 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5146 return -EIO; 5147 break; 5148 default: 5149 return -ENOSYS; 5150 } 5151 5152 return autosw & 1; 5153 } 5154 5155 static int video_autosw_set(int enable) 5156 { 5157 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5158 return -EIO; 5159 return 0; 5160 } 5161 5162 static int video_outputsw_cycle(void) 5163 { 5164 int autosw = video_autosw_get(); 5165 int res; 5166 5167 if (autosw < 0) 5168 return autosw; 5169 5170 switch (video_supported) { 5171 case TPACPI_VIDEO_570: 5172 res = video_autosw_set(1); 5173 if (res) 5174 return res; 5175 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5176 break; 5177 case TPACPI_VIDEO_770: 5178 case TPACPI_VIDEO_NEW: 5179 res = video_autosw_set(1); 5180 if (res) 5181 return res; 5182 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5183 break; 5184 default: 5185 return -ENOSYS; 5186 } 5187 if (!autosw && video_autosw_set(autosw)) { 5188 pr_err("video auto-switch left enabled due to error\n"); 5189 return -EIO; 5190 } 5191 5192 return (res) ? 0 : -EIO; 5193 } 5194 5195 static int video_expand_toggle(void) 5196 { 5197 switch (video_supported) { 5198 case TPACPI_VIDEO_570: 5199 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5200 0 : -EIO; 5201 case TPACPI_VIDEO_770: 5202 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5203 0 : -EIO; 5204 case TPACPI_VIDEO_NEW: 5205 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5206 0 : -EIO; 5207 default: 5208 return -ENOSYS; 5209 } 5210 /* not reached */ 5211 } 5212 5213 static int video_read(struct seq_file *m) 5214 { 5215 int status, autosw; 5216 5217 if (video_supported == TPACPI_VIDEO_NONE) { 5218 seq_printf(m, "status:\t\tnot supported\n"); 5219 return 0; 5220 } 5221 5222 /* Even reads can crash X.org, so... */ 5223 if (!capable(CAP_SYS_ADMIN)) 5224 return -EPERM; 5225 5226 status = video_outputsw_get(); 5227 if (status < 0) 5228 return status; 5229 5230 autosw = video_autosw_get(); 5231 if (autosw < 0) 5232 return autosw; 5233 5234 seq_printf(m, "status:\t\tsupported\n"); 5235 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5236 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5237 if (video_supported == TPACPI_VIDEO_NEW) 5238 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5239 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5240 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5241 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5242 if (video_supported == TPACPI_VIDEO_NEW) 5243 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5244 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5245 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5246 5247 return 0; 5248 } 5249 5250 static int video_write(char *buf) 5251 { 5252 char *cmd; 5253 int enable, disable, status; 5254 int res; 5255 5256 if (video_supported == TPACPI_VIDEO_NONE) 5257 return -ENODEV; 5258 5259 /* Even reads can crash X.org, let alone writes... */ 5260 if (!capable(CAP_SYS_ADMIN)) 5261 return -EPERM; 5262 5263 enable = 0; 5264 disable = 0; 5265 5266 while ((cmd = strsep(&buf, ","))) { 5267 if (strlencmp(cmd, "lcd_enable") == 0) { 5268 enable |= TP_ACPI_VIDEO_S_LCD; 5269 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5270 disable |= TP_ACPI_VIDEO_S_LCD; 5271 } else if (strlencmp(cmd, "crt_enable") == 0) { 5272 enable |= TP_ACPI_VIDEO_S_CRT; 5273 } else if (strlencmp(cmd, "crt_disable") == 0) { 5274 disable |= TP_ACPI_VIDEO_S_CRT; 5275 } else if (video_supported == TPACPI_VIDEO_NEW && 5276 strlencmp(cmd, "dvi_enable") == 0) { 5277 enable |= TP_ACPI_VIDEO_S_DVI; 5278 } else if (video_supported == TPACPI_VIDEO_NEW && 5279 strlencmp(cmd, "dvi_disable") == 0) { 5280 disable |= TP_ACPI_VIDEO_S_DVI; 5281 } else if (strlencmp(cmd, "auto_enable") == 0) { 5282 res = video_autosw_set(1); 5283 if (res) 5284 return res; 5285 } else if (strlencmp(cmd, "auto_disable") == 0) { 5286 res = video_autosw_set(0); 5287 if (res) 5288 return res; 5289 } else if (strlencmp(cmd, "video_switch") == 0) { 5290 res = video_outputsw_cycle(); 5291 if (res) 5292 return res; 5293 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5294 res = video_expand_toggle(); 5295 if (res) 5296 return res; 5297 } else 5298 return -EINVAL; 5299 } 5300 5301 if (enable || disable) { 5302 status = video_outputsw_get(); 5303 if (status < 0) 5304 return status; 5305 res = video_outputsw_set((status & ~disable) | enable); 5306 if (res) 5307 return res; 5308 } 5309 5310 return 0; 5311 } 5312 5313 static struct ibm_struct video_driver_data = { 5314 .name = "video", 5315 .read = video_read, 5316 .write = video_write, 5317 .exit = video_exit, 5318 }; 5319 5320 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5321 5322 /************************************************************************* 5323 * Keyboard backlight subdriver 5324 */ 5325 5326 static enum led_brightness kbdlight_brightness; 5327 static DEFINE_MUTEX(kbdlight_mutex); 5328 5329 static int kbdlight_set_level(int level) 5330 { 5331 int ret = 0; 5332 5333 if (!hkey_handle) 5334 return -ENXIO; 5335 5336 mutex_lock(&kbdlight_mutex); 5337 5338 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5339 ret = -EIO; 5340 else 5341 kbdlight_brightness = level; 5342 5343 mutex_unlock(&kbdlight_mutex); 5344 5345 return ret; 5346 } 5347 5348 static int kbdlight_get_level(void) 5349 { 5350 int status = 0; 5351 5352 if (!hkey_handle) 5353 return -ENXIO; 5354 5355 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5356 return -EIO; 5357 5358 if (status < 0) 5359 return status; 5360 5361 return status & 0x3; 5362 } 5363 5364 static bool kbdlight_is_supported(void) 5365 { 5366 int status = 0; 5367 5368 if (!hkey_handle) 5369 return false; 5370 5371 if (!acpi_has_method(hkey_handle, "MLCG")) { 5372 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5373 return false; 5374 } 5375 5376 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5377 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5378 return false; 5379 } 5380 5381 if (status < 0) { 5382 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5383 return false; 5384 } 5385 5386 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5387 /* 5388 * Guessed test for keyboard backlight: 5389 * 5390 * Machines with backlight keyboard return: 5391 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5392 * b110100010010000000XX - ThinkPad x230 5393 * b010100000010000000XX - ThinkPad x240 5394 * b010100000010000000XX - ThinkPad W541 5395 * (XX is current backlight level) 5396 * 5397 * Machines without backlight keyboard return: 5398 * b10100001000000000000 - ThinkPad x230 5399 * b10110001000000000000 - ThinkPad E430 5400 * b00000000000000000000 - ThinkPad E450 5401 * 5402 * Candidate BITs for detection test (XOR): 5403 * b01000000001000000000 5404 * ^ 5405 */ 5406 return status & BIT(9); 5407 } 5408 5409 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5410 enum led_brightness brightness) 5411 { 5412 return kbdlight_set_level(brightness); 5413 } 5414 5415 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5416 { 5417 int level; 5418 5419 level = kbdlight_get_level(); 5420 if (level < 0) 5421 return 0; 5422 5423 return level; 5424 } 5425 5426 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5427 .led_classdev = { 5428 .name = "tpacpi::kbd_backlight", 5429 .max_brightness = 2, 5430 .flags = LED_BRIGHT_HW_CHANGED, 5431 .brightness_set_blocking = &kbdlight_sysfs_set, 5432 .brightness_get = &kbdlight_sysfs_get, 5433 } 5434 }; 5435 5436 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5437 { 5438 int rc; 5439 5440 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5441 5442 TPACPI_ACPIHANDLE_INIT(hkey); 5443 5444 if (!kbdlight_is_supported()) { 5445 tp_features.kbdlight = 0; 5446 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5447 return 1; 5448 } 5449 5450 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5451 tp_features.kbdlight = 1; 5452 5453 rc = led_classdev_register(&tpacpi_pdev->dev, 5454 &tpacpi_led_kbdlight.led_classdev); 5455 if (rc < 0) { 5456 tp_features.kbdlight = 0; 5457 return rc; 5458 } 5459 5460 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5461 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5462 return 0; 5463 } 5464 5465 static void kbdlight_exit(void) 5466 { 5467 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5468 } 5469 5470 static int kbdlight_set_level_and_update(int level) 5471 { 5472 int ret; 5473 struct led_classdev *led_cdev; 5474 5475 ret = kbdlight_set_level(level); 5476 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5477 5478 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5479 led_cdev->brightness = level; 5480 5481 return ret; 5482 } 5483 5484 static int kbdlight_read(struct seq_file *m) 5485 { 5486 int level; 5487 5488 if (!tp_features.kbdlight) { 5489 seq_printf(m, "status:\t\tnot supported\n"); 5490 } else { 5491 level = kbdlight_get_level(); 5492 if (level < 0) 5493 seq_printf(m, "status:\t\terror %d\n", level); 5494 else 5495 seq_printf(m, "status:\t\t%d\n", level); 5496 seq_printf(m, "commands:\t0, 1, 2\n"); 5497 } 5498 5499 return 0; 5500 } 5501 5502 static int kbdlight_write(char *buf) 5503 { 5504 char *cmd; 5505 int res, level = -EINVAL; 5506 5507 if (!tp_features.kbdlight) 5508 return -ENODEV; 5509 5510 while ((cmd = strsep(&buf, ","))) { 5511 res = kstrtoint(cmd, 10, &level); 5512 if (res < 0) 5513 return res; 5514 } 5515 5516 if (level >= 3 || level < 0) 5517 return -EINVAL; 5518 5519 return kbdlight_set_level_and_update(level); 5520 } 5521 5522 static void kbdlight_suspend(void) 5523 { 5524 struct led_classdev *led_cdev; 5525 5526 if (!tp_features.kbdlight) 5527 return; 5528 5529 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5530 led_update_brightness(led_cdev); 5531 led_classdev_suspend(led_cdev); 5532 } 5533 5534 static void kbdlight_resume(void) 5535 { 5536 if (!tp_features.kbdlight) 5537 return; 5538 5539 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5540 } 5541 5542 static struct ibm_struct kbdlight_driver_data = { 5543 .name = "kbdlight", 5544 .read = kbdlight_read, 5545 .write = kbdlight_write, 5546 .suspend = kbdlight_suspend, 5547 .resume = kbdlight_resume, 5548 .exit = kbdlight_exit, 5549 }; 5550 5551 /************************************************************************* 5552 * Light (thinklight) subdriver 5553 */ 5554 5555 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5556 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5557 5558 static int light_get_status(void) 5559 { 5560 int status = 0; 5561 5562 if (tp_features.light_status) { 5563 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5564 return -EIO; 5565 return (!!status); 5566 } 5567 5568 return -ENXIO; 5569 } 5570 5571 static int light_set_status(int status) 5572 { 5573 int rc; 5574 5575 if (tp_features.light) { 5576 if (cmos_handle) { 5577 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5578 (status) ? 5579 TP_CMOS_THINKLIGHT_ON : 5580 TP_CMOS_THINKLIGHT_OFF); 5581 } else { 5582 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5583 (status) ? 1 : 0); 5584 } 5585 return (rc) ? 0 : -EIO; 5586 } 5587 5588 return -ENXIO; 5589 } 5590 5591 static int light_sysfs_set(struct led_classdev *led_cdev, 5592 enum led_brightness brightness) 5593 { 5594 return light_set_status((brightness != LED_OFF) ? 5595 TPACPI_LED_ON : TPACPI_LED_OFF); 5596 } 5597 5598 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5599 { 5600 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5601 } 5602 5603 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5604 .led_classdev = { 5605 .name = "tpacpi::thinklight", 5606 .brightness_set_blocking = &light_sysfs_set, 5607 .brightness_get = &light_sysfs_get, 5608 } 5609 }; 5610 5611 static int __init light_init(struct ibm_init_struct *iibm) 5612 { 5613 int rc; 5614 5615 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5616 5617 if (tpacpi_is_ibm()) { 5618 TPACPI_ACPIHANDLE_INIT(ledb); 5619 TPACPI_ACPIHANDLE_INIT(lght); 5620 } 5621 TPACPI_ACPIHANDLE_INIT(cmos); 5622 5623 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5624 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5625 5626 if (tp_features.light) 5627 /* light status not supported on 5628 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5629 tp_features.light_status = 5630 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5631 5632 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5633 str_supported(tp_features.light), 5634 str_supported(tp_features.light_status)); 5635 5636 if (!tp_features.light) 5637 return 1; 5638 5639 rc = led_classdev_register(&tpacpi_pdev->dev, 5640 &tpacpi_led_thinklight.led_classdev); 5641 5642 if (rc < 0) { 5643 tp_features.light = 0; 5644 tp_features.light_status = 0; 5645 } else { 5646 rc = 0; 5647 } 5648 5649 return rc; 5650 } 5651 5652 static void light_exit(void) 5653 { 5654 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5655 } 5656 5657 static int light_read(struct seq_file *m) 5658 { 5659 int status; 5660 5661 if (!tp_features.light) { 5662 seq_printf(m, "status:\t\tnot supported\n"); 5663 } else if (!tp_features.light_status) { 5664 seq_printf(m, "status:\t\tunknown\n"); 5665 seq_printf(m, "commands:\ton, off\n"); 5666 } else { 5667 status = light_get_status(); 5668 if (status < 0) 5669 return status; 5670 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5671 seq_printf(m, "commands:\ton, off\n"); 5672 } 5673 5674 return 0; 5675 } 5676 5677 static int light_write(char *buf) 5678 { 5679 char *cmd; 5680 int newstatus = 0; 5681 5682 if (!tp_features.light) 5683 return -ENODEV; 5684 5685 while ((cmd = strsep(&buf, ","))) { 5686 if (strlencmp(cmd, "on") == 0) { 5687 newstatus = 1; 5688 } else if (strlencmp(cmd, "off") == 0) { 5689 newstatus = 0; 5690 } else 5691 return -EINVAL; 5692 } 5693 5694 return light_set_status(newstatus); 5695 } 5696 5697 static struct ibm_struct light_driver_data = { 5698 .name = "light", 5699 .read = light_read, 5700 .write = light_write, 5701 .exit = light_exit, 5702 }; 5703 5704 /************************************************************************* 5705 * CMOS subdriver 5706 */ 5707 5708 /* sysfs cmos_command -------------------------------------------------- */ 5709 static ssize_t cmos_command_store(struct device *dev, 5710 struct device_attribute *attr, 5711 const char *buf, size_t count) 5712 { 5713 unsigned long cmos_cmd; 5714 int res; 5715 5716 if (parse_strtoul(buf, 21, &cmos_cmd)) 5717 return -EINVAL; 5718 5719 res = issue_thinkpad_cmos_command(cmos_cmd); 5720 return (res) ? res : count; 5721 } 5722 5723 static DEVICE_ATTR_WO(cmos_command); 5724 5725 /* --------------------------------------------------------------------- */ 5726 5727 static int __init cmos_init(struct ibm_init_struct *iibm) 5728 { 5729 int res; 5730 5731 vdbg_printk(TPACPI_DBG_INIT, 5732 "initializing cmos commands subdriver\n"); 5733 5734 TPACPI_ACPIHANDLE_INIT(cmos); 5735 5736 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5737 str_supported(cmos_handle != NULL)); 5738 5739 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5740 if (res) 5741 return res; 5742 5743 return (cmos_handle) ? 0 : 1; 5744 } 5745 5746 static void cmos_exit(void) 5747 { 5748 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5749 } 5750 5751 static int cmos_read(struct seq_file *m) 5752 { 5753 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5754 R30, R31, T20-22, X20-21 */ 5755 if (!cmos_handle) 5756 seq_printf(m, "status:\t\tnot supported\n"); 5757 else { 5758 seq_printf(m, "status:\t\tsupported\n"); 5759 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5760 } 5761 5762 return 0; 5763 } 5764 5765 static int cmos_write(char *buf) 5766 { 5767 char *cmd; 5768 int cmos_cmd, res; 5769 5770 while ((cmd = strsep(&buf, ","))) { 5771 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5772 cmos_cmd >= 0 && cmos_cmd <= 21) { 5773 /* cmos_cmd set */ 5774 } else 5775 return -EINVAL; 5776 5777 res = issue_thinkpad_cmos_command(cmos_cmd); 5778 if (res) 5779 return res; 5780 } 5781 5782 return 0; 5783 } 5784 5785 static struct ibm_struct cmos_driver_data = { 5786 .name = "cmos", 5787 .read = cmos_read, 5788 .write = cmos_write, 5789 .exit = cmos_exit, 5790 }; 5791 5792 /************************************************************************* 5793 * LED subdriver 5794 */ 5795 5796 enum led_access_mode { 5797 TPACPI_LED_NONE = 0, 5798 TPACPI_LED_570, /* 570 */ 5799 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5800 TPACPI_LED_NEW, /* all others */ 5801 }; 5802 5803 enum { /* For TPACPI_LED_OLD */ 5804 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5805 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5806 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5807 }; 5808 5809 static enum led_access_mode led_supported; 5810 5811 static acpi_handle led_handle; 5812 5813 #define TPACPI_LED_NUMLEDS 16 5814 static struct tpacpi_led_classdev *tpacpi_leds; 5815 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5816 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5817 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5818 "tpacpi::power", 5819 "tpacpi:orange:batt", 5820 "tpacpi:green:batt", 5821 "tpacpi::dock_active", 5822 "tpacpi::bay_active", 5823 "tpacpi::dock_batt", 5824 "tpacpi::unknown_led", 5825 "tpacpi::standby", 5826 "tpacpi::dock_status1", 5827 "tpacpi::dock_status2", 5828 "tpacpi::unknown_led2", 5829 "tpacpi::unknown_led3", 5830 "tpacpi::thinkvantage", 5831 }; 5832 #define TPACPI_SAFE_LEDS 0x1081U 5833 5834 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5835 { 5836 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5837 return false; 5838 #else 5839 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5840 #endif 5841 } 5842 5843 static int led_get_status(const unsigned int led) 5844 { 5845 int status; 5846 enum led_status_t led_s; 5847 5848 switch (led_supported) { 5849 case TPACPI_LED_570: 5850 if (!acpi_evalf(ec_handle, 5851 &status, "GLED", "dd", 1 << led)) 5852 return -EIO; 5853 led_s = (status == 0) ? 5854 TPACPI_LED_OFF : 5855 ((status == 1) ? 5856 TPACPI_LED_ON : 5857 TPACPI_LED_BLINK); 5858 tpacpi_led_state_cache[led] = led_s; 5859 return led_s; 5860 default: 5861 return -ENXIO; 5862 } 5863 5864 /* not reached */ 5865 } 5866 5867 static int led_set_status(const unsigned int led, 5868 const enum led_status_t ledstatus) 5869 { 5870 /* off, on, blink. Index is led_status_t */ 5871 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5872 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5873 5874 int rc = 0; 5875 5876 switch (led_supported) { 5877 case TPACPI_LED_570: 5878 /* 570 */ 5879 if (unlikely(led > 7)) 5880 return -EINVAL; 5881 if (unlikely(tpacpi_is_led_restricted(led))) 5882 return -EPERM; 5883 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5884 (1 << led), led_sled_arg1[ledstatus])) 5885 return -EIO; 5886 break; 5887 case TPACPI_LED_OLD: 5888 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5889 if (unlikely(led > 7)) 5890 return -EINVAL; 5891 if (unlikely(tpacpi_is_led_restricted(led))) 5892 return -EPERM; 5893 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5894 if (rc >= 0) 5895 rc = ec_write(TPACPI_LED_EC_HLBL, 5896 (ledstatus == TPACPI_LED_BLINK) << led); 5897 if (rc >= 0) 5898 rc = ec_write(TPACPI_LED_EC_HLCL, 5899 (ledstatus != TPACPI_LED_OFF) << led); 5900 break; 5901 case TPACPI_LED_NEW: 5902 /* all others */ 5903 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5904 return -EINVAL; 5905 if (unlikely(tpacpi_is_led_restricted(led))) 5906 return -EPERM; 5907 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5908 led, led_led_arg1[ledstatus])) 5909 return -EIO; 5910 break; 5911 default: 5912 return -ENXIO; 5913 } 5914 5915 if (!rc) 5916 tpacpi_led_state_cache[led] = ledstatus; 5917 5918 return rc; 5919 } 5920 5921 static int led_sysfs_set(struct led_classdev *led_cdev, 5922 enum led_brightness brightness) 5923 { 5924 struct tpacpi_led_classdev *data = container_of(led_cdev, 5925 struct tpacpi_led_classdev, led_classdev); 5926 enum led_status_t new_state; 5927 5928 if (brightness == LED_OFF) 5929 new_state = TPACPI_LED_OFF; 5930 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5931 new_state = TPACPI_LED_ON; 5932 else 5933 new_state = TPACPI_LED_BLINK; 5934 5935 return led_set_status(data->led, new_state); 5936 } 5937 5938 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5939 unsigned long *delay_on, unsigned long *delay_off) 5940 { 5941 struct tpacpi_led_classdev *data = container_of(led_cdev, 5942 struct tpacpi_led_classdev, led_classdev); 5943 5944 /* Can we choose the flash rate? */ 5945 if (*delay_on == 0 && *delay_off == 0) { 5946 /* yes. set them to the hardware blink rate (1 Hz) */ 5947 *delay_on = 500; /* ms */ 5948 *delay_off = 500; /* ms */ 5949 } else if ((*delay_on != 500) || (*delay_off != 500)) 5950 return -EINVAL; 5951 5952 return led_set_status(data->led, TPACPI_LED_BLINK); 5953 } 5954 5955 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5956 { 5957 int rc; 5958 5959 struct tpacpi_led_classdev *data = container_of(led_cdev, 5960 struct tpacpi_led_classdev, led_classdev); 5961 5962 rc = led_get_status(data->led); 5963 5964 if (rc == TPACPI_LED_OFF || rc < 0) 5965 rc = LED_OFF; /* no error handling in led class :( */ 5966 else 5967 rc = LED_FULL; 5968 5969 return rc; 5970 } 5971 5972 static void led_exit(void) 5973 { 5974 unsigned int i; 5975 5976 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5977 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5978 5979 kfree(tpacpi_leds); 5980 } 5981 5982 static int __init tpacpi_init_led(unsigned int led) 5983 { 5984 /* LEDs with no name don't get registered */ 5985 if (!tpacpi_led_names[led]) 5986 return 0; 5987 5988 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5989 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5990 if (led_supported == TPACPI_LED_570) 5991 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5992 5993 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5994 tpacpi_leds[led].led = led; 5995 5996 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5997 } 5998 5999 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 6000 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 6001 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 6002 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 6003 6004 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 6005 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 6006 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 6007 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 6008 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 6009 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 6010 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 6011 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 6012 6013 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 6014 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 6015 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 6016 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 6017 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 6018 6019 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 6020 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 6021 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 6022 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 6023 6024 /* (1) - may have excess leds enabled on MSB */ 6025 6026 /* Defaults (order matters, keep last, don't reorder!) */ 6027 { /* Lenovo */ 6028 .vendor = PCI_VENDOR_ID_LENOVO, 6029 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6030 .quirks = 0x1fffU, 6031 }, 6032 { /* IBM ThinkPads with no EC version string */ 6033 .vendor = PCI_VENDOR_ID_IBM, 6034 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 6035 .quirks = 0x00ffU, 6036 }, 6037 { /* IBM ThinkPads with EC version string */ 6038 .vendor = PCI_VENDOR_ID_IBM, 6039 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6040 .quirks = 0x00bfU, 6041 }, 6042 }; 6043 6044 static enum led_access_mode __init led_init_detect_mode(void) 6045 { 6046 acpi_status status; 6047 6048 if (tpacpi_is_ibm()) { 6049 /* 570 */ 6050 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6051 if (ACPI_SUCCESS(status)) 6052 return TPACPI_LED_570; 6053 6054 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6055 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6056 if (ACPI_SUCCESS(status)) 6057 return TPACPI_LED_OLD; 6058 } 6059 6060 /* most others */ 6061 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6062 if (ACPI_SUCCESS(status)) 6063 return TPACPI_LED_NEW; 6064 6065 /* R30, R31, and unknown firmwares */ 6066 led_handle = NULL; 6067 return TPACPI_LED_NONE; 6068 } 6069 6070 static int __init led_init(struct ibm_init_struct *iibm) 6071 { 6072 unsigned int i; 6073 int rc; 6074 unsigned long useful_leds; 6075 6076 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6077 6078 led_supported = led_init_detect_mode(); 6079 6080 if (led_supported != TPACPI_LED_NONE) { 6081 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6082 ARRAY_SIZE(led_useful_qtable)); 6083 6084 if (!useful_leds) { 6085 led_handle = NULL; 6086 led_supported = TPACPI_LED_NONE; 6087 } 6088 } 6089 6090 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6091 str_supported(led_supported), led_supported); 6092 6093 if (led_supported == TPACPI_LED_NONE) 6094 return 1; 6095 6096 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6097 GFP_KERNEL); 6098 if (!tpacpi_leds) { 6099 pr_err("Out of memory for LED data\n"); 6100 return -ENOMEM; 6101 } 6102 6103 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6104 tpacpi_leds[i].led = -1; 6105 6106 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6107 rc = tpacpi_init_led(i); 6108 if (rc < 0) { 6109 led_exit(); 6110 return rc; 6111 } 6112 } 6113 } 6114 6115 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6116 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6117 #endif 6118 return 0; 6119 } 6120 6121 #define str_led_status(s) \ 6122 ((s) == TPACPI_LED_OFF ? "off" : \ 6123 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6124 6125 static int led_read(struct seq_file *m) 6126 { 6127 if (!led_supported) { 6128 seq_printf(m, "status:\t\tnot supported\n"); 6129 return 0; 6130 } 6131 seq_printf(m, "status:\t\tsupported\n"); 6132 6133 if (led_supported == TPACPI_LED_570) { 6134 /* 570 */ 6135 int i, status; 6136 for (i = 0; i < 8; i++) { 6137 status = led_get_status(i); 6138 if (status < 0) 6139 return -EIO; 6140 seq_printf(m, "%d:\t\t%s\n", 6141 i, str_led_status(status)); 6142 } 6143 } 6144 6145 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6146 6147 return 0; 6148 } 6149 6150 static int led_write(char *buf) 6151 { 6152 char *cmd; 6153 int led, rc; 6154 enum led_status_t s; 6155 6156 if (!led_supported) 6157 return -ENODEV; 6158 6159 while ((cmd = strsep(&buf, ","))) { 6160 if (sscanf(cmd, "%d", &led) != 1) 6161 return -EINVAL; 6162 6163 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6164 return -ENODEV; 6165 6166 if (tpacpi_leds[led].led < 0) 6167 return -ENODEV; 6168 6169 if (strstr(cmd, "off")) { 6170 s = TPACPI_LED_OFF; 6171 } else if (strstr(cmd, "on")) { 6172 s = TPACPI_LED_ON; 6173 } else if (strstr(cmd, "blink")) { 6174 s = TPACPI_LED_BLINK; 6175 } else { 6176 return -EINVAL; 6177 } 6178 6179 rc = led_set_status(led, s); 6180 if (rc < 0) 6181 return rc; 6182 } 6183 6184 return 0; 6185 } 6186 6187 static struct ibm_struct led_driver_data = { 6188 .name = "led", 6189 .read = led_read, 6190 .write = led_write, 6191 .exit = led_exit, 6192 }; 6193 6194 /************************************************************************* 6195 * Beep subdriver 6196 */ 6197 6198 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6199 6200 #define TPACPI_BEEP_Q1 0x0001 6201 6202 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6203 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6204 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6205 }; 6206 6207 static int __init beep_init(struct ibm_init_struct *iibm) 6208 { 6209 unsigned long quirks; 6210 6211 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6212 6213 TPACPI_ACPIHANDLE_INIT(beep); 6214 6215 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6216 str_supported(beep_handle != NULL)); 6217 6218 quirks = tpacpi_check_quirks(beep_quirk_table, 6219 ARRAY_SIZE(beep_quirk_table)); 6220 6221 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6222 6223 return (beep_handle) ? 0 : 1; 6224 } 6225 6226 static int beep_read(struct seq_file *m) 6227 { 6228 if (!beep_handle) 6229 seq_printf(m, "status:\t\tnot supported\n"); 6230 else { 6231 seq_printf(m, "status:\t\tsupported\n"); 6232 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6233 } 6234 6235 return 0; 6236 } 6237 6238 static int beep_write(char *buf) 6239 { 6240 char *cmd; 6241 int beep_cmd; 6242 6243 if (!beep_handle) 6244 return -ENODEV; 6245 6246 while ((cmd = strsep(&buf, ","))) { 6247 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6248 beep_cmd >= 0 && beep_cmd <= 17) { 6249 /* beep_cmd set */ 6250 } else 6251 return -EINVAL; 6252 if (tp_features.beep_needs_two_args) { 6253 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6254 beep_cmd, 0)) 6255 return -EIO; 6256 } else { 6257 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6258 beep_cmd)) 6259 return -EIO; 6260 } 6261 } 6262 6263 return 0; 6264 } 6265 6266 static struct ibm_struct beep_driver_data = { 6267 .name = "beep", 6268 .read = beep_read, 6269 .write = beep_write, 6270 }; 6271 6272 /************************************************************************* 6273 * Thermal subdriver 6274 */ 6275 6276 enum thermal_access_mode { 6277 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6278 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6279 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6280 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6281 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6282 }; 6283 6284 enum { /* TPACPI_THERMAL_TPEC_* */ 6285 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6286 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6287 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6288 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6289 6290 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6291 }; 6292 6293 6294 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6295 struct ibm_thermal_sensors_struct { 6296 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6297 }; 6298 6299 static enum thermal_access_mode thermal_read_mode; 6300 static const struct attribute_group *thermal_attr_group; 6301 static bool thermal_use_labels; 6302 6303 /* idx is zero-based */ 6304 static int thermal_get_sensor(int idx, s32 *value) 6305 { 6306 int t; 6307 s8 tmp; 6308 char tmpi[5]; 6309 6310 t = TP_EC_THERMAL_TMP0; 6311 6312 switch (thermal_read_mode) { 6313 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6314 case TPACPI_THERMAL_TPEC_16: 6315 if (idx >= 8 && idx <= 15) { 6316 t = TP_EC_THERMAL_TMP8; 6317 idx -= 8; 6318 } 6319 #endif 6320 fallthrough; 6321 case TPACPI_THERMAL_TPEC_8: 6322 if (idx <= 7) { 6323 if (!acpi_ec_read(t + idx, &tmp)) 6324 return -EIO; 6325 *value = tmp * 1000; 6326 return 0; 6327 } 6328 break; 6329 6330 case TPACPI_THERMAL_ACPI_UPDT: 6331 if (idx <= 7) { 6332 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6333 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6334 return -EIO; 6335 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6336 return -EIO; 6337 *value = (t - 2732) * 100; 6338 return 0; 6339 } 6340 break; 6341 6342 case TPACPI_THERMAL_ACPI_TMP07: 6343 if (idx <= 7) { 6344 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6345 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6346 return -EIO; 6347 if (t > 127 || t < -127) 6348 t = TP_EC_THERMAL_TMP_NA; 6349 *value = t * 1000; 6350 return 0; 6351 } 6352 break; 6353 6354 case TPACPI_THERMAL_NONE: 6355 default: 6356 return -ENOSYS; 6357 } 6358 6359 return -EINVAL; 6360 } 6361 6362 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6363 { 6364 int res, i; 6365 int n; 6366 6367 n = 8; 6368 i = 0; 6369 6370 if (!s) 6371 return -EINVAL; 6372 6373 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6374 n = 16; 6375 6376 for (i = 0 ; i < n; i++) { 6377 res = thermal_get_sensor(i, &s->temp[i]); 6378 if (res) 6379 return res; 6380 } 6381 6382 return n; 6383 } 6384 6385 static void thermal_dump_all_sensors(void) 6386 { 6387 int n, i; 6388 struct ibm_thermal_sensors_struct t; 6389 6390 n = thermal_get_sensors(&t); 6391 if (n <= 0) 6392 return; 6393 6394 pr_notice("temperatures (Celsius):"); 6395 6396 for (i = 0; i < n; i++) { 6397 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6398 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6399 else 6400 pr_cont(" N/A"); 6401 } 6402 6403 pr_cont("\n"); 6404 } 6405 6406 /* sysfs temp##_input -------------------------------------------------- */ 6407 6408 static ssize_t thermal_temp_input_show(struct device *dev, 6409 struct device_attribute *attr, 6410 char *buf) 6411 { 6412 struct sensor_device_attribute *sensor_attr = 6413 to_sensor_dev_attr(attr); 6414 int idx = sensor_attr->index; 6415 s32 value; 6416 int res; 6417 6418 res = thermal_get_sensor(idx, &value); 6419 if (res) 6420 return res; 6421 if (value == TPACPI_THERMAL_SENSOR_NA) 6422 return -ENXIO; 6423 6424 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6425 } 6426 6427 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6428 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6429 thermal_temp_input_show, NULL, _idxB) 6430 6431 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6432 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6433 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6434 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6435 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6436 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6437 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6438 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6439 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6440 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6441 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6442 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6443 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6444 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6445 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6446 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6447 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6448 }; 6449 6450 #define THERMAL_ATTRS(X) \ 6451 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6452 6453 static struct attribute *thermal_temp_input_attr[] = { 6454 THERMAL_ATTRS(8), 6455 THERMAL_ATTRS(9), 6456 THERMAL_ATTRS(10), 6457 THERMAL_ATTRS(11), 6458 THERMAL_ATTRS(12), 6459 THERMAL_ATTRS(13), 6460 THERMAL_ATTRS(14), 6461 THERMAL_ATTRS(15), 6462 THERMAL_ATTRS(0), 6463 THERMAL_ATTRS(1), 6464 THERMAL_ATTRS(2), 6465 THERMAL_ATTRS(3), 6466 THERMAL_ATTRS(4), 6467 THERMAL_ATTRS(5), 6468 THERMAL_ATTRS(6), 6469 THERMAL_ATTRS(7), 6470 NULL 6471 }; 6472 6473 static const struct attribute_group thermal_temp_input16_group = { 6474 .attrs = thermal_temp_input_attr 6475 }; 6476 6477 static const struct attribute_group thermal_temp_input8_group = { 6478 .attrs = &thermal_temp_input_attr[8] 6479 }; 6480 6481 #undef THERMAL_SENSOR_ATTR_TEMP 6482 #undef THERMAL_ATTRS 6483 6484 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6485 { 6486 return sysfs_emit(buf, "CPU\n"); 6487 } 6488 static DEVICE_ATTR_RO(temp1_label); 6489 6490 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6491 { 6492 return sysfs_emit(buf, "GPU\n"); 6493 } 6494 static DEVICE_ATTR_RO(temp2_label); 6495 6496 static struct attribute *temp_label_attributes[] = { 6497 &dev_attr_temp1_label.attr, 6498 &dev_attr_temp2_label.attr, 6499 NULL 6500 }; 6501 6502 static const struct attribute_group temp_label_attr_group = { 6503 .attrs = temp_label_attributes, 6504 }; 6505 6506 /* --------------------------------------------------------------------- */ 6507 6508 static int __init thermal_init(struct ibm_init_struct *iibm) 6509 { 6510 u8 t, ta1, ta2, ver = 0; 6511 int i; 6512 int acpi_tmp7; 6513 int res; 6514 6515 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6516 6517 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6518 6519 if (thinkpad_id.ec_model) { 6520 /* 6521 * Direct EC access mode: sensors at registers 6522 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6523 * non-implemented, thermal sensors return 0x80 when 6524 * not available 6525 * The above rule is unfortunately flawed. This has been seen with 6526 * 0xC2 (power supply ID) causing thermal control problems. 6527 * The EC version can be determined by offset 0xEF and at least for 6528 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6529 * are not thermal registers. 6530 */ 6531 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6532 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6533 6534 ta1 = ta2 = 0; 6535 for (i = 0; i < 8; i++) { 6536 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6537 ta1 |= t; 6538 } else { 6539 ta1 = 0; 6540 break; 6541 } 6542 if (ver < 3) { 6543 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6544 ta2 |= t; 6545 } else { 6546 ta1 = 0; 6547 break; 6548 } 6549 } 6550 } 6551 if (ta1 == 0) { 6552 /* This is sheer paranoia, but we handle it anyway */ 6553 if (acpi_tmp7) { 6554 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6555 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6556 } else { 6557 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6558 thermal_read_mode = TPACPI_THERMAL_NONE; 6559 } 6560 } else { 6561 if (ver >= 3) { 6562 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6563 thermal_use_labels = true; 6564 } else { 6565 thermal_read_mode = 6566 (ta2 != 0) ? 6567 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6568 } 6569 } 6570 } else if (acpi_tmp7) { 6571 if (tpacpi_is_ibm() && 6572 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6573 /* 600e/x, 770e, 770x */ 6574 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6575 } else { 6576 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6577 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6578 } 6579 } else { 6580 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6581 thermal_read_mode = TPACPI_THERMAL_NONE; 6582 } 6583 6584 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6585 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6586 thermal_read_mode); 6587 6588 switch (thermal_read_mode) { 6589 case TPACPI_THERMAL_TPEC_16: 6590 thermal_attr_group = &thermal_temp_input16_group; 6591 break; 6592 case TPACPI_THERMAL_TPEC_8: 6593 case TPACPI_THERMAL_ACPI_TMP07: 6594 case TPACPI_THERMAL_ACPI_UPDT: 6595 thermal_attr_group = &thermal_temp_input8_group; 6596 break; 6597 case TPACPI_THERMAL_NONE: 6598 default: 6599 return 1; 6600 } 6601 6602 res = sysfs_create_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6603 if (res) 6604 return res; 6605 6606 if (thermal_use_labels) { 6607 res = sysfs_create_group(&tpacpi_hwmon->kobj, &temp_label_attr_group); 6608 if (res) { 6609 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6610 return res; 6611 } 6612 } 6613 6614 return 0; 6615 } 6616 6617 static void thermal_exit(void) 6618 { 6619 if (thermal_attr_group) 6620 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6621 6622 if (thermal_use_labels) 6623 sysfs_remove_group(&tpacpi_hwmon->kobj, &temp_label_attr_group); 6624 } 6625 6626 static int thermal_read(struct seq_file *m) 6627 { 6628 int n, i; 6629 struct ibm_thermal_sensors_struct t; 6630 6631 n = thermal_get_sensors(&t); 6632 if (unlikely(n < 0)) 6633 return n; 6634 6635 seq_printf(m, "temperatures:\t"); 6636 6637 if (n > 0) { 6638 for (i = 0; i < (n - 1); i++) 6639 seq_printf(m, "%d ", t.temp[i] / 1000); 6640 seq_printf(m, "%d\n", t.temp[i] / 1000); 6641 } else 6642 seq_printf(m, "not supported\n"); 6643 6644 return 0; 6645 } 6646 6647 static struct ibm_struct thermal_driver_data = { 6648 .name = "thermal", 6649 .read = thermal_read, 6650 .exit = thermal_exit, 6651 }; 6652 6653 /************************************************************************* 6654 * Backlight/brightness subdriver 6655 */ 6656 6657 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6658 6659 /* 6660 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6661 * CMOS NVRAM byte 0x5E, bits 0-3. 6662 * 6663 * EC HBRV (0x31) has the following layout 6664 * Bit 7: unknown function 6665 * Bit 6: unknown function 6666 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6667 * Bit 4: must be set to zero to avoid problems 6668 * Bit 3-0: backlight brightness level 6669 * 6670 * brightness_get_raw returns status data in the HBRV layout 6671 * 6672 * WARNING: The X61 has been verified to use HBRV for something else, so 6673 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6674 * testing on the very early *60 Lenovo models... 6675 */ 6676 6677 enum { 6678 TP_EC_BACKLIGHT = 0x31, 6679 6680 /* TP_EC_BACKLIGHT bitmasks */ 6681 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6682 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6683 TP_EC_BACKLIGHT_MAPSW = 0x20, 6684 }; 6685 6686 enum tpacpi_brightness_access_mode { 6687 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6688 TPACPI_BRGHT_MODE_EC, /* EC control */ 6689 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6690 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6691 TPACPI_BRGHT_MODE_MAX 6692 }; 6693 6694 static struct backlight_device *ibm_backlight_device; 6695 6696 static enum tpacpi_brightness_access_mode brightness_mode = 6697 TPACPI_BRGHT_MODE_MAX; 6698 6699 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6700 6701 static struct mutex brightness_mutex; 6702 6703 /* NVRAM brightness access, 6704 * call with brightness_mutex held! */ 6705 static unsigned int tpacpi_brightness_nvram_get(void) 6706 { 6707 u8 lnvram; 6708 6709 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6710 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6711 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6712 lnvram &= bright_maxlvl; 6713 6714 return lnvram; 6715 } 6716 6717 static void tpacpi_brightness_checkpoint_nvram(void) 6718 { 6719 u8 lec = 0; 6720 u8 b_nvram; 6721 6722 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6723 return; 6724 6725 vdbg_printk(TPACPI_DBG_BRGHT, 6726 "trying to checkpoint backlight level to NVRAM...\n"); 6727 6728 if (mutex_lock_killable(&brightness_mutex) < 0) 6729 return; 6730 6731 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6732 goto unlock; 6733 lec &= TP_EC_BACKLIGHT_LVLMSK; 6734 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6735 6736 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6737 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6738 /* NVRAM needs update */ 6739 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6740 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6741 b_nvram |= lec; 6742 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6743 dbg_printk(TPACPI_DBG_BRGHT, 6744 "updated NVRAM backlight level to %u (0x%02x)\n", 6745 (unsigned int) lec, (unsigned int) b_nvram); 6746 } else 6747 vdbg_printk(TPACPI_DBG_BRGHT, 6748 "NVRAM backlight level already is %u (0x%02x)\n", 6749 (unsigned int) lec, (unsigned int) b_nvram); 6750 6751 unlock: 6752 mutex_unlock(&brightness_mutex); 6753 } 6754 6755 6756 /* call with brightness_mutex held! */ 6757 static int tpacpi_brightness_get_raw(int *status) 6758 { 6759 u8 lec = 0; 6760 6761 switch (brightness_mode) { 6762 case TPACPI_BRGHT_MODE_UCMS_STEP: 6763 *status = tpacpi_brightness_nvram_get(); 6764 return 0; 6765 case TPACPI_BRGHT_MODE_EC: 6766 case TPACPI_BRGHT_MODE_ECNVRAM: 6767 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6768 return -EIO; 6769 *status = lec; 6770 return 0; 6771 default: 6772 return -ENXIO; 6773 } 6774 } 6775 6776 /* call with brightness_mutex held! */ 6777 /* do NOT call with illegal backlight level value */ 6778 static int tpacpi_brightness_set_ec(unsigned int value) 6779 { 6780 u8 lec = 0; 6781 6782 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6783 return -EIO; 6784 6785 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6786 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6787 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6788 return -EIO; 6789 6790 return 0; 6791 } 6792 6793 /* call with brightness_mutex held! */ 6794 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6795 { 6796 int cmos_cmd, inc; 6797 unsigned int current_value, i; 6798 6799 current_value = tpacpi_brightness_nvram_get(); 6800 6801 if (value == current_value) 6802 return 0; 6803 6804 cmos_cmd = (value > current_value) ? 6805 TP_CMOS_BRIGHTNESS_UP : 6806 TP_CMOS_BRIGHTNESS_DOWN; 6807 inc = (value > current_value) ? 1 : -1; 6808 6809 for (i = current_value; i != value; i += inc) 6810 if (issue_thinkpad_cmos_command(cmos_cmd)) 6811 return -EIO; 6812 6813 return 0; 6814 } 6815 6816 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6817 static int brightness_set(unsigned int value) 6818 { 6819 int res; 6820 6821 if (value > bright_maxlvl) 6822 return -EINVAL; 6823 6824 vdbg_printk(TPACPI_DBG_BRGHT, 6825 "set backlight level to %d\n", value); 6826 6827 res = mutex_lock_killable(&brightness_mutex); 6828 if (res < 0) 6829 return res; 6830 6831 switch (brightness_mode) { 6832 case TPACPI_BRGHT_MODE_EC: 6833 case TPACPI_BRGHT_MODE_ECNVRAM: 6834 res = tpacpi_brightness_set_ec(value); 6835 break; 6836 case TPACPI_BRGHT_MODE_UCMS_STEP: 6837 res = tpacpi_brightness_set_ucmsstep(value); 6838 break; 6839 default: 6840 res = -ENXIO; 6841 } 6842 6843 mutex_unlock(&brightness_mutex); 6844 return res; 6845 } 6846 6847 /* sysfs backlight class ----------------------------------------------- */ 6848 6849 static int brightness_update_status(struct backlight_device *bd) 6850 { 6851 unsigned int level = 6852 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6853 bd->props.power == FB_BLANK_UNBLANK) ? 6854 bd->props.brightness : 0; 6855 6856 dbg_printk(TPACPI_DBG_BRGHT, 6857 "backlight: attempt to set level to %d\n", 6858 level); 6859 6860 /* it is the backlight class's job (caller) to handle 6861 * EINTR and other errors properly */ 6862 return brightness_set(level); 6863 } 6864 6865 static int brightness_get(struct backlight_device *bd) 6866 { 6867 int status, res; 6868 6869 res = mutex_lock_killable(&brightness_mutex); 6870 if (res < 0) 6871 return 0; 6872 6873 res = tpacpi_brightness_get_raw(&status); 6874 6875 mutex_unlock(&brightness_mutex); 6876 6877 if (res < 0) 6878 return 0; 6879 6880 return status & TP_EC_BACKLIGHT_LVLMSK; 6881 } 6882 6883 static void tpacpi_brightness_notify_change(void) 6884 { 6885 backlight_force_update(ibm_backlight_device, 6886 BACKLIGHT_UPDATE_HOTKEY); 6887 } 6888 6889 static const struct backlight_ops ibm_backlight_data = { 6890 .get_brightness = brightness_get, 6891 .update_status = brightness_update_status, 6892 }; 6893 6894 /* --------------------------------------------------------------------- */ 6895 6896 /* 6897 * Call _BCL method of video device. On some ThinkPads this will 6898 * switch the firmware to the ACPI brightness control mode. 6899 */ 6900 6901 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6902 { 6903 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6904 union acpi_object *obj; 6905 struct acpi_device *device, *child; 6906 int rc; 6907 6908 if (acpi_bus_get_device(handle, &device)) 6909 return 0; 6910 6911 rc = 0; 6912 list_for_each_entry(child, &device->children, node) { 6913 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6914 NULL, &buffer); 6915 if (ACPI_FAILURE(status)) { 6916 buffer.length = ACPI_ALLOCATE_BUFFER; 6917 continue; 6918 } 6919 6920 obj = (union acpi_object *)buffer.pointer; 6921 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6922 pr_err("Unknown _BCL data, please report this to %s\n", 6923 TPACPI_MAIL); 6924 rc = 0; 6925 } else { 6926 rc = obj->package.count; 6927 } 6928 break; 6929 } 6930 6931 kfree(buffer.pointer); 6932 return rc; 6933 } 6934 6935 6936 /* 6937 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6938 */ 6939 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6940 { 6941 acpi_handle video_device; 6942 int bcl_levels = 0; 6943 6944 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6945 if (video_device) 6946 bcl_levels = tpacpi_query_bcl_levels(video_device); 6947 6948 tp_features.bright_acpimode = (bcl_levels > 0); 6949 6950 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6951 } 6952 6953 /* 6954 * These are only useful for models that have only one possibility 6955 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6956 * these quirks. 6957 */ 6958 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6959 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6960 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6961 6962 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6963 /* Models with ATI GPUs known to require ECNVRAM mode */ 6964 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6965 6966 /* Models with ATI GPUs that can use ECNVRAM */ 6967 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6968 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6969 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6970 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6971 6972 /* Models with Intel Extreme Graphics 2 */ 6973 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6974 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6975 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6976 6977 /* Models with Intel GMA900 */ 6978 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6979 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6980 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6981 }; 6982 6983 /* 6984 * Returns < 0 for error, otherwise sets tp_features.bright_* 6985 * and bright_maxlvl. 6986 */ 6987 static void __init tpacpi_detect_brightness_capabilities(void) 6988 { 6989 unsigned int b; 6990 6991 vdbg_printk(TPACPI_DBG_INIT, 6992 "detecting firmware brightness interface capabilities\n"); 6993 6994 /* we could run a quirks check here (same table used by 6995 * brightness_init) if needed */ 6996 6997 /* 6998 * We always attempt to detect acpi support, so as to switch 6999 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 7000 * going to publish a backlight interface 7001 */ 7002 b = tpacpi_check_std_acpi_brightness_support(); 7003 switch (b) { 7004 case 16: 7005 bright_maxlvl = 15; 7006 break; 7007 case 8: 7008 case 0: 7009 bright_maxlvl = 7; 7010 break; 7011 default: 7012 tp_features.bright_unkfw = 1; 7013 bright_maxlvl = b - 1; 7014 } 7015 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 7016 } 7017 7018 static int __init brightness_init(struct ibm_init_struct *iibm) 7019 { 7020 struct backlight_properties props; 7021 int b; 7022 unsigned long quirks; 7023 7024 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 7025 7026 mutex_init(&brightness_mutex); 7027 7028 quirks = tpacpi_check_quirks(brightness_quirk_table, 7029 ARRAY_SIZE(brightness_quirk_table)); 7030 7031 /* tpacpi_detect_brightness_capabilities() must have run already */ 7032 7033 /* if it is unknown, we don't handle it: it wouldn't be safe */ 7034 if (tp_features.bright_unkfw) 7035 return 1; 7036 7037 if (!brightness_enable) { 7038 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7039 "brightness support disabled by module parameter\n"); 7040 return 1; 7041 } 7042 7043 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 7044 if (brightness_enable > 1) { 7045 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 7046 return 1; 7047 } else if (brightness_enable == 1) { 7048 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 7049 return 1; 7050 } 7051 } else if (!tp_features.bright_acpimode) { 7052 pr_notice("ACPI backlight interface not available\n"); 7053 return 1; 7054 } 7055 7056 pr_notice("ACPI native brightness control enabled\n"); 7057 7058 /* 7059 * Check for module parameter bogosity, note that we 7060 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 7061 * able to detect "unspecified" 7062 */ 7063 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 7064 return -EINVAL; 7065 7066 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 7067 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 7068 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 7069 if (quirks & TPACPI_BRGHT_Q_EC) 7070 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 7071 else 7072 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 7073 7074 dbg_printk(TPACPI_DBG_BRGHT, 7075 "driver auto-selected brightness_mode=%d\n", 7076 brightness_mode); 7077 } 7078 7079 /* Safety */ 7080 if (!tpacpi_is_ibm() && 7081 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7082 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7083 return -EINVAL; 7084 7085 if (tpacpi_brightness_get_raw(&b) < 0) 7086 return 1; 7087 7088 memset(&props, 0, sizeof(struct backlight_properties)); 7089 props.type = BACKLIGHT_PLATFORM; 7090 props.max_brightness = bright_maxlvl; 7091 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7092 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7093 NULL, NULL, 7094 &ibm_backlight_data, 7095 &props); 7096 if (IS_ERR(ibm_backlight_device)) { 7097 int rc = PTR_ERR(ibm_backlight_device); 7098 ibm_backlight_device = NULL; 7099 pr_err("Could not register backlight device\n"); 7100 return rc; 7101 } 7102 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7103 "brightness is supported\n"); 7104 7105 if (quirks & TPACPI_BRGHT_Q_ASK) { 7106 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7107 brightness_mode); 7108 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7109 TPACPI_MAIL); 7110 } 7111 7112 /* Added by mistake in early 2007. Probably useless, but it could 7113 * be working around some unknown firmware problem where the value 7114 * read at startup doesn't match the real hardware state... so leave 7115 * it in place just in case */ 7116 backlight_update_status(ibm_backlight_device); 7117 7118 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7119 "brightness: registering brightness hotkeys as change notification\n"); 7120 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7121 | TP_ACPI_HKEY_BRGHTUP_MASK 7122 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7123 return 0; 7124 } 7125 7126 static void brightness_suspend(void) 7127 { 7128 tpacpi_brightness_checkpoint_nvram(); 7129 } 7130 7131 static void brightness_shutdown(void) 7132 { 7133 tpacpi_brightness_checkpoint_nvram(); 7134 } 7135 7136 static void brightness_exit(void) 7137 { 7138 if (ibm_backlight_device) { 7139 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7140 "calling backlight_device_unregister()\n"); 7141 backlight_device_unregister(ibm_backlight_device); 7142 } 7143 7144 tpacpi_brightness_checkpoint_nvram(); 7145 } 7146 7147 static int brightness_read(struct seq_file *m) 7148 { 7149 int level; 7150 7151 level = brightness_get(NULL); 7152 if (level < 0) { 7153 seq_printf(m, "level:\t\tunreadable\n"); 7154 } else { 7155 seq_printf(m, "level:\t\t%d\n", level); 7156 seq_printf(m, "commands:\tup, down\n"); 7157 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7158 bright_maxlvl); 7159 } 7160 7161 return 0; 7162 } 7163 7164 static int brightness_write(char *buf) 7165 { 7166 int level; 7167 int rc; 7168 char *cmd; 7169 7170 level = brightness_get(NULL); 7171 if (level < 0) 7172 return level; 7173 7174 while ((cmd = strsep(&buf, ","))) { 7175 if (strlencmp(cmd, "up") == 0) { 7176 if (level < bright_maxlvl) 7177 level++; 7178 } else if (strlencmp(cmd, "down") == 0) { 7179 if (level > 0) 7180 level--; 7181 } else if (sscanf(cmd, "level %d", &level) == 1 && 7182 level >= 0 && level <= bright_maxlvl) { 7183 /* new level set */ 7184 } else 7185 return -EINVAL; 7186 } 7187 7188 tpacpi_disclose_usertask("procfs brightness", 7189 "set level to %d\n", level); 7190 7191 /* 7192 * Now we know what the final level should be, so we try to set it. 7193 * Doing it this way makes the syscall restartable in case of EINTR 7194 */ 7195 rc = brightness_set(level); 7196 if (!rc && ibm_backlight_device) 7197 backlight_force_update(ibm_backlight_device, 7198 BACKLIGHT_UPDATE_SYSFS); 7199 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7200 } 7201 7202 static struct ibm_struct brightness_driver_data = { 7203 .name = "brightness", 7204 .read = brightness_read, 7205 .write = brightness_write, 7206 .exit = brightness_exit, 7207 .suspend = brightness_suspend, 7208 .shutdown = brightness_shutdown, 7209 }; 7210 7211 /************************************************************************* 7212 * Volume subdriver 7213 */ 7214 7215 /* 7216 * IBM ThinkPads have a simple volume controller with MUTE gating. 7217 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7218 * 7219 * Since the *61 series (and probably also the later *60 series), Lenovo 7220 * ThinkPads only implement the MUTE gate. 7221 * 7222 * EC register 0x30 7223 * Bit 6: MUTE (1 mutes sound) 7224 * Bit 3-0: Volume 7225 * Other bits should be zero as far as we know. 7226 * 7227 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7228 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7229 * such as bit 7 which is used to detect repeated presses of MUTE, 7230 * and we leave them unchanged. 7231 * 7232 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7233 * in response to user input. Unfortunately, this rarely works well. 7234 * The laptop changes the state of its internal MUTE gate and, on some 7235 * models, sends KEY_MUTE, causing any user code that responds to the 7236 * mute button to get confused. The hardware MUTE gate is also 7237 * unnecessary, since user code can handle the mute button without 7238 * kernel or EC help. 7239 * 7240 * To avoid confusing userspace, we simply disable all EC-based mute 7241 * and volume controls when possible. 7242 */ 7243 7244 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7245 7246 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7247 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7248 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7249 7250 #if SNDRV_CARDS <= 32 7251 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7252 #else 7253 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7254 #endif 7255 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7256 static char *alsa_id = "ThinkPadEC"; 7257 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7258 7259 struct tpacpi_alsa_data { 7260 struct snd_card *card; 7261 struct snd_ctl_elem_id *ctl_mute_id; 7262 struct snd_ctl_elem_id *ctl_vol_id; 7263 }; 7264 7265 static struct snd_card *alsa_card; 7266 7267 enum { 7268 TP_EC_AUDIO = 0x30, 7269 7270 /* TP_EC_AUDIO bits */ 7271 TP_EC_AUDIO_MUTESW = 6, 7272 7273 /* TP_EC_AUDIO bitmasks */ 7274 TP_EC_AUDIO_LVL_MSK = 0x0F, 7275 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7276 7277 /* Maximum volume */ 7278 TP_EC_VOLUME_MAX = 14, 7279 }; 7280 7281 enum tpacpi_volume_access_mode { 7282 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7283 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7284 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7285 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7286 TPACPI_VOL_MODE_MAX 7287 }; 7288 7289 enum tpacpi_volume_capabilities { 7290 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7291 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7292 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7293 TPACPI_VOL_CAP_MAX 7294 }; 7295 7296 enum tpacpi_mute_btn_mode { 7297 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7298 /* We don't know what mode 1 is. */ 7299 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7300 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7301 }; 7302 7303 static enum tpacpi_volume_access_mode volume_mode = 7304 TPACPI_VOL_MODE_MAX; 7305 7306 static enum tpacpi_volume_capabilities volume_capabilities; 7307 static bool volume_control_allowed; 7308 static bool software_mute_requested = true; 7309 static bool software_mute_active; 7310 static int software_mute_orig_mode; 7311 7312 /* 7313 * Used to syncronize writers to TP_EC_AUDIO and 7314 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7315 */ 7316 static struct mutex volume_mutex; 7317 7318 static void tpacpi_volume_checkpoint_nvram(void) 7319 { 7320 u8 lec = 0; 7321 u8 b_nvram; 7322 u8 ec_mask; 7323 7324 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7325 return; 7326 if (!volume_control_allowed) 7327 return; 7328 if (software_mute_active) 7329 return; 7330 7331 vdbg_printk(TPACPI_DBG_MIXER, 7332 "trying to checkpoint mixer state to NVRAM...\n"); 7333 7334 if (tp_features.mixer_no_level_control) 7335 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7336 else 7337 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7338 7339 if (mutex_lock_killable(&volume_mutex) < 0) 7340 return; 7341 7342 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7343 goto unlock; 7344 lec &= ec_mask; 7345 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7346 7347 if (lec != (b_nvram & ec_mask)) { 7348 /* NVRAM needs update */ 7349 b_nvram &= ~ec_mask; 7350 b_nvram |= lec; 7351 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7352 dbg_printk(TPACPI_DBG_MIXER, 7353 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7354 (unsigned int) lec, (unsigned int) b_nvram); 7355 } else { 7356 vdbg_printk(TPACPI_DBG_MIXER, 7357 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7358 (unsigned int) lec, (unsigned int) b_nvram); 7359 } 7360 7361 unlock: 7362 mutex_unlock(&volume_mutex); 7363 } 7364 7365 static int volume_get_status_ec(u8 *status) 7366 { 7367 u8 s; 7368 7369 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7370 return -EIO; 7371 7372 *status = s; 7373 7374 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7375 7376 return 0; 7377 } 7378 7379 static int volume_get_status(u8 *status) 7380 { 7381 return volume_get_status_ec(status); 7382 } 7383 7384 static int volume_set_status_ec(const u8 status) 7385 { 7386 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7387 return -EIO; 7388 7389 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7390 7391 /* 7392 * On X200s, and possibly on others, it can take a while for 7393 * reads to become correct. 7394 */ 7395 msleep(1); 7396 7397 return 0; 7398 } 7399 7400 static int volume_set_status(const u8 status) 7401 { 7402 return volume_set_status_ec(status); 7403 } 7404 7405 /* returns < 0 on error, 0 on no change, 1 on change */ 7406 static int __volume_set_mute_ec(const bool mute) 7407 { 7408 int rc; 7409 u8 s, n; 7410 7411 if (mutex_lock_killable(&volume_mutex) < 0) 7412 return -EINTR; 7413 7414 rc = volume_get_status_ec(&s); 7415 if (rc) 7416 goto unlock; 7417 7418 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7419 s & ~TP_EC_AUDIO_MUTESW_MSK; 7420 7421 if (n != s) { 7422 rc = volume_set_status_ec(n); 7423 if (!rc) 7424 rc = 1; 7425 } 7426 7427 unlock: 7428 mutex_unlock(&volume_mutex); 7429 return rc; 7430 } 7431 7432 static int volume_alsa_set_mute(const bool mute) 7433 { 7434 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7435 (mute) ? "" : "un"); 7436 return __volume_set_mute_ec(mute); 7437 } 7438 7439 static int volume_set_mute(const bool mute) 7440 { 7441 int rc; 7442 7443 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7444 (mute) ? "" : "un"); 7445 7446 rc = __volume_set_mute_ec(mute); 7447 return (rc < 0) ? rc : 0; 7448 } 7449 7450 /* returns < 0 on error, 0 on no change, 1 on change */ 7451 static int __volume_set_volume_ec(const u8 vol) 7452 { 7453 int rc; 7454 u8 s, n; 7455 7456 if (vol > TP_EC_VOLUME_MAX) 7457 return -EINVAL; 7458 7459 if (mutex_lock_killable(&volume_mutex) < 0) 7460 return -EINTR; 7461 7462 rc = volume_get_status_ec(&s); 7463 if (rc) 7464 goto unlock; 7465 7466 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7467 7468 if (n != s) { 7469 rc = volume_set_status_ec(n); 7470 if (!rc) 7471 rc = 1; 7472 } 7473 7474 unlock: 7475 mutex_unlock(&volume_mutex); 7476 return rc; 7477 } 7478 7479 static int volume_set_software_mute(bool startup) 7480 { 7481 int result; 7482 7483 if (!tpacpi_is_lenovo()) 7484 return -ENODEV; 7485 7486 if (startup) { 7487 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7488 "HAUM", "qd")) 7489 return -EIO; 7490 7491 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7492 "Initial HAUM setting was %d\n", 7493 software_mute_orig_mode); 7494 } 7495 7496 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7497 (int)TP_EC_MUTE_BTN_NONE)) 7498 return -EIO; 7499 7500 if (result != TP_EC_MUTE_BTN_NONE) 7501 pr_warn("Unexpected SAUM result %d\n", 7502 result); 7503 7504 /* 7505 * In software mute mode, the standard codec controls take 7506 * precendence, so we unmute the ThinkPad HW switch at 7507 * startup. Just on case there are SAUM-capable ThinkPads 7508 * with level controls, set max HW volume as well. 7509 */ 7510 if (tp_features.mixer_no_level_control) 7511 result = volume_set_mute(false); 7512 else 7513 result = volume_set_status(TP_EC_VOLUME_MAX); 7514 7515 if (result != 0) 7516 pr_warn("Failed to unmute the HW mute switch\n"); 7517 7518 return 0; 7519 } 7520 7521 static void volume_exit_software_mute(void) 7522 { 7523 int r; 7524 7525 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7526 || r != software_mute_orig_mode) 7527 pr_warn("Failed to restore mute mode\n"); 7528 } 7529 7530 static int volume_alsa_set_volume(const u8 vol) 7531 { 7532 dbg_printk(TPACPI_DBG_MIXER, 7533 "ALSA: trying to set volume level to %hu\n", vol); 7534 return __volume_set_volume_ec(vol); 7535 } 7536 7537 static void volume_alsa_notify_change(void) 7538 { 7539 struct tpacpi_alsa_data *d; 7540 7541 if (alsa_card && alsa_card->private_data) { 7542 d = alsa_card->private_data; 7543 if (d->ctl_mute_id) 7544 snd_ctl_notify(alsa_card, 7545 SNDRV_CTL_EVENT_MASK_VALUE, 7546 d->ctl_mute_id); 7547 if (d->ctl_vol_id) 7548 snd_ctl_notify(alsa_card, 7549 SNDRV_CTL_EVENT_MASK_VALUE, 7550 d->ctl_vol_id); 7551 } 7552 } 7553 7554 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7555 struct snd_ctl_elem_info *uinfo) 7556 { 7557 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7558 uinfo->count = 1; 7559 uinfo->value.integer.min = 0; 7560 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7561 return 0; 7562 } 7563 7564 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7565 struct snd_ctl_elem_value *ucontrol) 7566 { 7567 u8 s; 7568 int rc; 7569 7570 rc = volume_get_status(&s); 7571 if (rc < 0) 7572 return rc; 7573 7574 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7575 return 0; 7576 } 7577 7578 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7579 struct snd_ctl_elem_value *ucontrol) 7580 { 7581 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7582 ucontrol->value.integer.value[0]); 7583 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7584 } 7585 7586 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7587 7588 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7589 struct snd_ctl_elem_value *ucontrol) 7590 { 7591 u8 s; 7592 int rc; 7593 7594 rc = volume_get_status(&s); 7595 if (rc < 0) 7596 return rc; 7597 7598 ucontrol->value.integer.value[0] = 7599 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7600 return 0; 7601 } 7602 7603 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7604 struct snd_ctl_elem_value *ucontrol) 7605 { 7606 tpacpi_disclose_usertask("ALSA", "%smute\n", 7607 ucontrol->value.integer.value[0] ? 7608 "un" : ""); 7609 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7610 } 7611 7612 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7613 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7614 .name = "Console Playback Volume", 7615 .index = 0, 7616 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7617 .info = volume_alsa_vol_info, 7618 .get = volume_alsa_vol_get, 7619 }; 7620 7621 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7622 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7623 .name = "Console Playback Switch", 7624 .index = 0, 7625 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7626 .info = volume_alsa_mute_info, 7627 .get = volume_alsa_mute_get, 7628 }; 7629 7630 static void volume_suspend(void) 7631 { 7632 tpacpi_volume_checkpoint_nvram(); 7633 } 7634 7635 static void volume_resume(void) 7636 { 7637 if (software_mute_active) { 7638 if (volume_set_software_mute(false) < 0) 7639 pr_warn("Failed to restore software mute\n"); 7640 } else { 7641 volume_alsa_notify_change(); 7642 } 7643 } 7644 7645 static void volume_shutdown(void) 7646 { 7647 tpacpi_volume_checkpoint_nvram(); 7648 } 7649 7650 static void volume_exit(void) 7651 { 7652 if (alsa_card) { 7653 snd_card_free(alsa_card); 7654 alsa_card = NULL; 7655 } 7656 7657 tpacpi_volume_checkpoint_nvram(); 7658 7659 if (software_mute_active) 7660 volume_exit_software_mute(); 7661 } 7662 7663 static int __init volume_create_alsa_mixer(void) 7664 { 7665 struct snd_card *card; 7666 struct tpacpi_alsa_data *data; 7667 struct snd_kcontrol *ctl_vol; 7668 struct snd_kcontrol *ctl_mute; 7669 int rc; 7670 7671 rc = snd_card_new(&tpacpi_pdev->dev, 7672 alsa_index, alsa_id, THIS_MODULE, 7673 sizeof(struct tpacpi_alsa_data), &card); 7674 if (rc < 0 || !card) { 7675 pr_err("Failed to create ALSA card structures: %d\n", rc); 7676 return 1; 7677 } 7678 7679 BUG_ON(!card->private_data); 7680 data = card->private_data; 7681 data->card = card; 7682 7683 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7684 sizeof(card->driver)); 7685 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7686 sizeof(card->shortname)); 7687 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7688 (thinkpad_id.ec_version_str) ? 7689 thinkpad_id.ec_version_str : "(unknown)"); 7690 snprintf(card->longname, sizeof(card->longname), 7691 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7692 (thinkpad_id.ec_version_str) ? 7693 thinkpad_id.ec_version_str : "unknown"); 7694 7695 if (volume_control_allowed) { 7696 volume_alsa_control_vol.put = volume_alsa_vol_put; 7697 volume_alsa_control_vol.access = 7698 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7699 7700 volume_alsa_control_mute.put = volume_alsa_mute_put; 7701 volume_alsa_control_mute.access = 7702 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7703 } 7704 7705 if (!tp_features.mixer_no_level_control) { 7706 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7707 rc = snd_ctl_add(card, ctl_vol); 7708 if (rc < 0) { 7709 pr_err("Failed to create ALSA volume control: %d\n", 7710 rc); 7711 goto err_exit; 7712 } 7713 data->ctl_vol_id = &ctl_vol->id; 7714 } 7715 7716 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7717 rc = snd_ctl_add(card, ctl_mute); 7718 if (rc < 0) { 7719 pr_err("Failed to create ALSA mute control: %d\n", rc); 7720 goto err_exit; 7721 } 7722 data->ctl_mute_id = &ctl_mute->id; 7723 7724 rc = snd_card_register(card); 7725 if (rc < 0) { 7726 pr_err("Failed to register ALSA card: %d\n", rc); 7727 goto err_exit; 7728 } 7729 7730 alsa_card = card; 7731 return 0; 7732 7733 err_exit: 7734 snd_card_free(card); 7735 return 1; 7736 } 7737 7738 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7739 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7740 7741 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7742 /* Whitelist volume level on all IBM by default */ 7743 { .vendor = PCI_VENDOR_ID_IBM, 7744 .bios = TPACPI_MATCH_ANY, 7745 .ec = TPACPI_MATCH_ANY, 7746 .quirks = TPACPI_VOL_Q_LEVEL }, 7747 7748 /* Lenovo models with volume control (needs confirmation) */ 7749 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7750 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7751 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7752 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7753 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7754 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7755 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7756 7757 /* Whitelist mute-only on all Lenovo by default */ 7758 { .vendor = PCI_VENDOR_ID_LENOVO, 7759 .bios = TPACPI_MATCH_ANY, 7760 .ec = TPACPI_MATCH_ANY, 7761 .quirks = TPACPI_VOL_Q_MUTEONLY } 7762 }; 7763 7764 static int __init volume_init(struct ibm_init_struct *iibm) 7765 { 7766 unsigned long quirks; 7767 int rc; 7768 7769 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7770 7771 mutex_init(&volume_mutex); 7772 7773 /* 7774 * Check for module parameter bogosity, note that we 7775 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7776 * able to detect "unspecified" 7777 */ 7778 if (volume_mode > TPACPI_VOL_MODE_MAX) 7779 return -EINVAL; 7780 7781 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7782 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7783 TPACPI_MAIL); 7784 return 1; 7785 } 7786 7787 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7788 return -EINVAL; 7789 7790 /* 7791 * The ALSA mixer is our primary interface. 7792 * When disabled, don't install the subdriver at all 7793 */ 7794 if (!alsa_enable) { 7795 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7796 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7797 return 1; 7798 } 7799 7800 quirks = tpacpi_check_quirks(volume_quirk_table, 7801 ARRAY_SIZE(volume_quirk_table)); 7802 7803 switch (volume_capabilities) { 7804 case TPACPI_VOL_CAP_AUTO: 7805 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7806 tp_features.mixer_no_level_control = 1; 7807 else if (quirks & TPACPI_VOL_Q_LEVEL) 7808 tp_features.mixer_no_level_control = 0; 7809 else 7810 return 1; /* no mixer */ 7811 break; 7812 case TPACPI_VOL_CAP_VOLMUTE: 7813 tp_features.mixer_no_level_control = 0; 7814 break; 7815 case TPACPI_VOL_CAP_MUTEONLY: 7816 tp_features.mixer_no_level_control = 1; 7817 break; 7818 default: 7819 return 1; 7820 } 7821 7822 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7823 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7824 "using user-supplied volume_capabilities=%d\n", 7825 volume_capabilities); 7826 7827 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7828 volume_mode == TPACPI_VOL_MODE_MAX) { 7829 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7830 7831 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7832 "driver auto-selected volume_mode=%d\n", 7833 volume_mode); 7834 } else { 7835 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7836 "using user-supplied volume_mode=%d\n", 7837 volume_mode); 7838 } 7839 7840 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7841 "mute is supported, volume control is %s\n", 7842 str_supported(!tp_features.mixer_no_level_control)); 7843 7844 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7845 software_mute_active = true; 7846 } else { 7847 rc = volume_create_alsa_mixer(); 7848 if (rc) { 7849 pr_err("Could not create the ALSA mixer interface\n"); 7850 return rc; 7851 } 7852 7853 pr_info("Console audio control enabled, mode: %s\n", 7854 (volume_control_allowed) ? 7855 "override (read/write)" : 7856 "monitor (read only)"); 7857 } 7858 7859 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7860 "registering volume hotkeys as change notification\n"); 7861 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7862 | TP_ACPI_HKEY_VOLUP_MASK 7863 | TP_ACPI_HKEY_VOLDWN_MASK 7864 | TP_ACPI_HKEY_MUTE_MASK); 7865 7866 return 0; 7867 } 7868 7869 static int volume_read(struct seq_file *m) 7870 { 7871 u8 status; 7872 7873 if (volume_get_status(&status) < 0) { 7874 seq_printf(m, "level:\t\tunreadable\n"); 7875 } else { 7876 if (tp_features.mixer_no_level_control) 7877 seq_printf(m, "level:\t\tunsupported\n"); 7878 else 7879 seq_printf(m, "level:\t\t%d\n", 7880 status & TP_EC_AUDIO_LVL_MSK); 7881 7882 seq_printf(m, "mute:\t\t%s\n", 7883 onoff(status, TP_EC_AUDIO_MUTESW)); 7884 7885 if (volume_control_allowed) { 7886 seq_printf(m, "commands:\tunmute, mute\n"); 7887 if (!tp_features.mixer_no_level_control) { 7888 seq_printf(m, "commands:\tup, down\n"); 7889 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7890 TP_EC_VOLUME_MAX); 7891 } 7892 } 7893 } 7894 7895 return 0; 7896 } 7897 7898 static int volume_write(char *buf) 7899 { 7900 u8 s; 7901 u8 new_level, new_mute; 7902 int l; 7903 char *cmd; 7904 int rc; 7905 7906 /* 7907 * We do allow volume control at driver startup, so that the 7908 * user can set initial state through the volume=... parameter hack. 7909 */ 7910 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7911 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7912 tp_warned.volume_ctrl_forbidden = 1; 7913 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7914 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7915 } 7916 return -EPERM; 7917 } 7918 7919 rc = volume_get_status(&s); 7920 if (rc < 0) 7921 return rc; 7922 7923 new_level = s & TP_EC_AUDIO_LVL_MSK; 7924 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7925 7926 while ((cmd = strsep(&buf, ","))) { 7927 if (!tp_features.mixer_no_level_control) { 7928 if (strlencmp(cmd, "up") == 0) { 7929 if (new_mute) 7930 new_mute = 0; 7931 else if (new_level < TP_EC_VOLUME_MAX) 7932 new_level++; 7933 continue; 7934 } else if (strlencmp(cmd, "down") == 0) { 7935 if (new_mute) 7936 new_mute = 0; 7937 else if (new_level > 0) 7938 new_level--; 7939 continue; 7940 } else if (sscanf(cmd, "level %u", &l) == 1 && 7941 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7942 new_level = l; 7943 continue; 7944 } 7945 } 7946 if (strlencmp(cmd, "mute") == 0) 7947 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7948 else if (strlencmp(cmd, "unmute") == 0) 7949 new_mute = 0; 7950 else 7951 return -EINVAL; 7952 } 7953 7954 if (tp_features.mixer_no_level_control) { 7955 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7956 new_mute ? "" : "un"); 7957 rc = volume_set_mute(!!new_mute); 7958 } else { 7959 tpacpi_disclose_usertask("procfs volume", 7960 "%smute and set level to %d\n", 7961 new_mute ? "" : "un", new_level); 7962 rc = volume_set_status(new_mute | new_level); 7963 } 7964 volume_alsa_notify_change(); 7965 7966 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7967 } 7968 7969 static struct ibm_struct volume_driver_data = { 7970 .name = "volume", 7971 .read = volume_read, 7972 .write = volume_write, 7973 .exit = volume_exit, 7974 .suspend = volume_suspend, 7975 .resume = volume_resume, 7976 .shutdown = volume_shutdown, 7977 }; 7978 7979 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7980 7981 #define alsa_card NULL 7982 7983 static inline void volume_alsa_notify_change(void) 7984 { 7985 } 7986 7987 static int __init volume_init(struct ibm_init_struct *iibm) 7988 { 7989 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7990 7991 return 1; 7992 } 7993 7994 static struct ibm_struct volume_driver_data = { 7995 .name = "volume", 7996 }; 7997 7998 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7999 8000 /************************************************************************* 8001 * Fan subdriver 8002 */ 8003 8004 /* 8005 * FAN ACCESS MODES 8006 * 8007 * TPACPI_FAN_RD_ACPI_GFAN: 8008 * ACPI GFAN method: returns fan level 8009 * 8010 * see TPACPI_FAN_WR_ACPI_SFAN 8011 * EC 0x2f (HFSP) not available if GFAN exists 8012 * 8013 * TPACPI_FAN_WR_ACPI_SFAN: 8014 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 8015 * 8016 * EC 0x2f (HFSP) might be available *for reading*, but do not use 8017 * it for writing. 8018 * 8019 * TPACPI_FAN_WR_TPEC: 8020 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 8021 * Supported on almost all ThinkPads 8022 * 8023 * Fan speed changes of any sort (including those caused by the 8024 * disengaged mode) are usually done slowly by the firmware as the 8025 * maximum amount of fan duty cycle change per second seems to be 8026 * limited. 8027 * 8028 * Reading is not available if GFAN exists. 8029 * Writing is not available if SFAN exists. 8030 * 8031 * Bits 8032 * 7 automatic mode engaged; 8033 * (default operation mode of the ThinkPad) 8034 * fan level is ignored in this mode. 8035 * 6 full speed mode (takes precedence over bit 7); 8036 * not available on all thinkpads. May disable 8037 * the tachometer while the fan controller ramps up 8038 * the speed (which can take up to a few *minutes*). 8039 * Speeds up fan to 100% duty-cycle, which is far above 8040 * the standard RPM levels. It is not impossible that 8041 * it could cause hardware damage. 8042 * 5-3 unused in some models. Extra bits for fan level 8043 * in others, but still useless as all values above 8044 * 7 map to the same speed as level 7 in these models. 8045 * 2-0 fan level (0..7 usually) 8046 * 0x00 = stop 8047 * 0x07 = max (set when temperatures critical) 8048 * Some ThinkPads may have other levels, see 8049 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 8050 * 8051 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 8052 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 8053 * does so, its initial value is meaningless (0x07). 8054 * 8055 * For firmware bugs, refer to: 8056 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8057 * 8058 * ---- 8059 * 8060 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 8061 * Main fan tachometer reading (in RPM) 8062 * 8063 * This register is present on all ThinkPads with a new-style EC, and 8064 * it is known not to be present on the A21m/e, and T22, as there is 8065 * something else in offset 0x84 according to the ACPI DSDT. Other 8066 * ThinkPads from this same time period (and earlier) probably lack the 8067 * tachometer as well. 8068 * 8069 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 8070 * was never fixed by IBM to report the EC firmware version string 8071 * probably support the tachometer (like the early X models), so 8072 * detecting it is quite hard. We need more data to know for sure. 8073 * 8074 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8075 * might result. 8076 * 8077 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8078 * mode. 8079 * 8080 * For firmware bugs, refer to: 8081 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8082 * 8083 * ---- 8084 * 8085 * ThinkPad EC register 0x31 bit 0 (only on select models) 8086 * 8087 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8088 * show the speed of the main fan. When bit 0 of EC register 0x31 8089 * is one, the tachometer registers show the speed of the auxiliary 8090 * fan. 8091 * 8092 * Fan control seems to affect both fans, regardless of the state 8093 * of this bit. 8094 * 8095 * So far, only the firmware for the X60/X61 non-tablet versions 8096 * seem to support this (firmware TP-7M). 8097 * 8098 * TPACPI_FAN_WR_ACPI_FANS: 8099 * ThinkPad X31, X40, X41. Not available in the X60. 8100 * 8101 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8102 * high speed. ACPI DSDT seems to map these three speeds to levels 8103 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8104 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8105 * 8106 * The speeds are stored on handles 8107 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8108 * 8109 * There are three default speed sets, accessible as handles: 8110 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8111 * 8112 * ACPI DSDT switches which set is in use depending on various 8113 * factors. 8114 * 8115 * TPACPI_FAN_WR_TPEC is also available and should be used to 8116 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8117 * but the ACPI tables just mention level 7. 8118 */ 8119 8120 enum { /* Fan control constants */ 8121 fan_status_offset = 0x2f, /* EC register 0x2f */ 8122 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8123 * 0x84 must be read before 0x85 */ 8124 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8125 bit 0 selects which fan is active */ 8126 8127 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8128 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8129 8130 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8131 }; 8132 8133 enum fan_status_access_mode { 8134 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8135 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8136 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8137 }; 8138 8139 enum fan_control_access_mode { 8140 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8141 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8142 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8143 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8144 }; 8145 8146 enum fan_control_commands { 8147 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8148 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8149 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8150 * and also watchdog cmd */ 8151 }; 8152 8153 static bool fan_control_allowed; 8154 8155 static enum fan_status_access_mode fan_status_access_mode; 8156 static enum fan_control_access_mode fan_control_access_mode; 8157 static enum fan_control_commands fan_control_commands; 8158 8159 static u8 fan_control_initial_status; 8160 static u8 fan_control_desired_level; 8161 static u8 fan_control_resume_level; 8162 static int fan_watchdog_maxinterval; 8163 8164 static struct mutex fan_mutex; 8165 8166 static void fan_watchdog_fire(struct work_struct *ignored); 8167 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8168 8169 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8170 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8171 "\\FSPD", /* 600e/x, 770e, 770x */ 8172 ); /* all others */ 8173 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8174 "JFNS", /* 770x-JL */ 8175 ); /* all others */ 8176 8177 /* 8178 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8179 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8180 * be in auto mode (0x80). 8181 * 8182 * This is corrected by any write to HFSP either by the driver, or 8183 * by the firmware. 8184 * 8185 * We assume 0x07 really means auto mode while this quirk is active, 8186 * as this is far more likely than the ThinkPad being in level 7, 8187 * which is only used by the firmware during thermal emergencies. 8188 * 8189 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8190 * TP-70 (T43, R52), which are known to be buggy. 8191 */ 8192 8193 static void fan_quirk1_setup(void) 8194 { 8195 if (fan_control_initial_status == 0x07) { 8196 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8197 tp_features.fan_ctrl_status_undef = 1; 8198 } 8199 } 8200 8201 static void fan_quirk1_handle(u8 *fan_status) 8202 { 8203 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8204 if (*fan_status != fan_control_initial_status) { 8205 /* something changed the HFSP regisnter since 8206 * driver init time, so it is not undefined 8207 * anymore */ 8208 tp_features.fan_ctrl_status_undef = 0; 8209 } else { 8210 /* Return most likely status. In fact, it 8211 * might be the only possible status */ 8212 *fan_status = TP_EC_FAN_AUTO; 8213 } 8214 } 8215 } 8216 8217 /* Select main fan on X60/X61, NOOP on others */ 8218 static bool fan_select_fan1(void) 8219 { 8220 if (tp_features.second_fan) { 8221 u8 val; 8222 8223 if (ec_read(fan_select_offset, &val) < 0) 8224 return false; 8225 val &= 0xFEU; 8226 if (ec_write(fan_select_offset, val) < 0) 8227 return false; 8228 } 8229 return true; 8230 } 8231 8232 /* Select secondary fan on X60/X61 */ 8233 static bool fan_select_fan2(void) 8234 { 8235 u8 val; 8236 8237 if (!tp_features.second_fan) 8238 return false; 8239 8240 if (ec_read(fan_select_offset, &val) < 0) 8241 return false; 8242 val |= 0x01U; 8243 if (ec_write(fan_select_offset, val) < 0) 8244 return false; 8245 8246 return true; 8247 } 8248 8249 /* 8250 * Call with fan_mutex held 8251 */ 8252 static void fan_update_desired_level(u8 status) 8253 { 8254 if ((status & 8255 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8256 if (status > 7) 8257 fan_control_desired_level = 7; 8258 else 8259 fan_control_desired_level = status; 8260 } 8261 } 8262 8263 static int fan_get_status(u8 *status) 8264 { 8265 u8 s; 8266 8267 /* TODO: 8268 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8269 8270 switch (fan_status_access_mode) { 8271 case TPACPI_FAN_RD_ACPI_GFAN: { 8272 /* 570, 600e/x, 770e, 770x */ 8273 int res; 8274 8275 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8276 return -EIO; 8277 8278 if (likely(status)) 8279 *status = res & 0x07; 8280 8281 break; 8282 } 8283 case TPACPI_FAN_RD_TPEC: 8284 /* all except 570, 600e/x, 770e, 770x */ 8285 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8286 return -EIO; 8287 8288 if (likely(status)) { 8289 *status = s; 8290 fan_quirk1_handle(status); 8291 } 8292 8293 break; 8294 8295 default: 8296 return -ENXIO; 8297 } 8298 8299 return 0; 8300 } 8301 8302 static int fan_get_status_safe(u8 *status) 8303 { 8304 int rc; 8305 u8 s; 8306 8307 if (mutex_lock_killable(&fan_mutex)) 8308 return -ERESTARTSYS; 8309 rc = fan_get_status(&s); 8310 if (!rc) 8311 fan_update_desired_level(s); 8312 mutex_unlock(&fan_mutex); 8313 8314 if (rc) 8315 return rc; 8316 if (status) 8317 *status = s; 8318 8319 return 0; 8320 } 8321 8322 static int fan_get_speed(unsigned int *speed) 8323 { 8324 u8 hi, lo; 8325 8326 switch (fan_status_access_mode) { 8327 case TPACPI_FAN_RD_TPEC: 8328 /* all except 570, 600e/x, 770e, 770x */ 8329 if (unlikely(!fan_select_fan1())) 8330 return -EIO; 8331 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8332 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8333 return -EIO; 8334 8335 if (likely(speed)) 8336 *speed = (hi << 8) | lo; 8337 8338 break; 8339 8340 default: 8341 return -ENXIO; 8342 } 8343 8344 return 0; 8345 } 8346 8347 static int fan2_get_speed(unsigned int *speed) 8348 { 8349 u8 hi, lo; 8350 bool rc; 8351 8352 switch (fan_status_access_mode) { 8353 case TPACPI_FAN_RD_TPEC: 8354 /* all except 570, 600e/x, 770e, 770x */ 8355 if (unlikely(!fan_select_fan2())) 8356 return -EIO; 8357 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8358 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8359 fan_select_fan1(); /* play it safe */ 8360 if (rc) 8361 return -EIO; 8362 8363 if (likely(speed)) 8364 *speed = (hi << 8) | lo; 8365 8366 break; 8367 8368 default: 8369 return -ENXIO; 8370 } 8371 8372 return 0; 8373 } 8374 8375 static int fan_set_level(int level) 8376 { 8377 if (!fan_control_allowed) 8378 return -EPERM; 8379 8380 switch (fan_control_access_mode) { 8381 case TPACPI_FAN_WR_ACPI_SFAN: 8382 if ((level < 0) || (level > 7)) 8383 return -EINVAL; 8384 8385 if (tp_features.second_fan_ctl) { 8386 if (!fan_select_fan2() || 8387 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8388 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8389 tp_features.second_fan_ctl = 0; 8390 } 8391 fan_select_fan1(); 8392 } 8393 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8394 return -EIO; 8395 break; 8396 8397 case TPACPI_FAN_WR_ACPI_FANS: 8398 case TPACPI_FAN_WR_TPEC: 8399 if (!(level & TP_EC_FAN_AUTO) && 8400 !(level & TP_EC_FAN_FULLSPEED) && 8401 ((level < 0) || (level > 7))) 8402 return -EINVAL; 8403 8404 /* safety net should the EC not support AUTO 8405 * or FULLSPEED mode bits and just ignore them */ 8406 if (level & TP_EC_FAN_FULLSPEED) 8407 level |= 7; /* safety min speed 7 */ 8408 else if (level & TP_EC_FAN_AUTO) 8409 level |= 4; /* safety min speed 4 */ 8410 8411 if (tp_features.second_fan_ctl) { 8412 if (!fan_select_fan2() || 8413 !acpi_ec_write(fan_status_offset, level)) { 8414 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8415 tp_features.second_fan_ctl = 0; 8416 } 8417 fan_select_fan1(); 8418 8419 } 8420 if (!acpi_ec_write(fan_status_offset, level)) 8421 return -EIO; 8422 else 8423 tp_features.fan_ctrl_status_undef = 0; 8424 break; 8425 8426 default: 8427 return -ENXIO; 8428 } 8429 8430 vdbg_printk(TPACPI_DBG_FAN, 8431 "fan control: set fan control register to 0x%02x\n", level); 8432 return 0; 8433 } 8434 8435 static int fan_set_level_safe(int level) 8436 { 8437 int rc; 8438 8439 if (!fan_control_allowed) 8440 return -EPERM; 8441 8442 if (mutex_lock_killable(&fan_mutex)) 8443 return -ERESTARTSYS; 8444 8445 if (level == TPACPI_FAN_LAST_LEVEL) 8446 level = fan_control_desired_level; 8447 8448 rc = fan_set_level(level); 8449 if (!rc) 8450 fan_update_desired_level(level); 8451 8452 mutex_unlock(&fan_mutex); 8453 return rc; 8454 } 8455 8456 static int fan_set_enable(void) 8457 { 8458 u8 s; 8459 int rc; 8460 8461 if (!fan_control_allowed) 8462 return -EPERM; 8463 8464 if (mutex_lock_killable(&fan_mutex)) 8465 return -ERESTARTSYS; 8466 8467 switch (fan_control_access_mode) { 8468 case TPACPI_FAN_WR_ACPI_FANS: 8469 case TPACPI_FAN_WR_TPEC: 8470 rc = fan_get_status(&s); 8471 if (rc < 0) 8472 break; 8473 8474 /* Don't go out of emergency fan mode */ 8475 if (s != 7) { 8476 s &= 0x07; 8477 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8478 } 8479 8480 if (!acpi_ec_write(fan_status_offset, s)) 8481 rc = -EIO; 8482 else { 8483 tp_features.fan_ctrl_status_undef = 0; 8484 rc = 0; 8485 } 8486 break; 8487 8488 case TPACPI_FAN_WR_ACPI_SFAN: 8489 rc = fan_get_status(&s); 8490 if (rc < 0) 8491 break; 8492 8493 s &= 0x07; 8494 8495 /* Set fan to at least level 4 */ 8496 s |= 4; 8497 8498 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8499 rc = -EIO; 8500 else 8501 rc = 0; 8502 break; 8503 8504 default: 8505 rc = -ENXIO; 8506 } 8507 8508 mutex_unlock(&fan_mutex); 8509 8510 if (!rc) 8511 vdbg_printk(TPACPI_DBG_FAN, 8512 "fan control: set fan control register to 0x%02x\n", 8513 s); 8514 return rc; 8515 } 8516 8517 static int fan_set_disable(void) 8518 { 8519 int rc; 8520 8521 if (!fan_control_allowed) 8522 return -EPERM; 8523 8524 if (mutex_lock_killable(&fan_mutex)) 8525 return -ERESTARTSYS; 8526 8527 rc = 0; 8528 switch (fan_control_access_mode) { 8529 case TPACPI_FAN_WR_ACPI_FANS: 8530 case TPACPI_FAN_WR_TPEC: 8531 if (!acpi_ec_write(fan_status_offset, 0x00)) 8532 rc = -EIO; 8533 else { 8534 fan_control_desired_level = 0; 8535 tp_features.fan_ctrl_status_undef = 0; 8536 } 8537 break; 8538 8539 case TPACPI_FAN_WR_ACPI_SFAN: 8540 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8541 rc = -EIO; 8542 else 8543 fan_control_desired_level = 0; 8544 break; 8545 8546 default: 8547 rc = -ENXIO; 8548 } 8549 8550 if (!rc) 8551 vdbg_printk(TPACPI_DBG_FAN, 8552 "fan control: set fan control register to 0\n"); 8553 8554 mutex_unlock(&fan_mutex); 8555 return rc; 8556 } 8557 8558 static int fan_set_speed(int speed) 8559 { 8560 int rc; 8561 8562 if (!fan_control_allowed) 8563 return -EPERM; 8564 8565 if (mutex_lock_killable(&fan_mutex)) 8566 return -ERESTARTSYS; 8567 8568 rc = 0; 8569 switch (fan_control_access_mode) { 8570 case TPACPI_FAN_WR_ACPI_FANS: 8571 if (speed >= 0 && speed <= 65535) { 8572 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8573 speed, speed, speed)) 8574 rc = -EIO; 8575 } else 8576 rc = -EINVAL; 8577 break; 8578 8579 default: 8580 rc = -ENXIO; 8581 } 8582 8583 mutex_unlock(&fan_mutex); 8584 return rc; 8585 } 8586 8587 static void fan_watchdog_reset(void) 8588 { 8589 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8590 return; 8591 8592 if (fan_watchdog_maxinterval > 0 && 8593 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8594 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8595 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8596 else 8597 cancel_delayed_work(&fan_watchdog_task); 8598 } 8599 8600 static void fan_watchdog_fire(struct work_struct *ignored) 8601 { 8602 int rc; 8603 8604 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8605 return; 8606 8607 pr_notice("fan watchdog: enabling fan\n"); 8608 rc = fan_set_enable(); 8609 if (rc < 0) { 8610 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8611 rc); 8612 /* reschedule for later */ 8613 fan_watchdog_reset(); 8614 } 8615 } 8616 8617 /* 8618 * SYSFS fan layout: hwmon compatible (device) 8619 * 8620 * pwm*_enable: 8621 * 0: "disengaged" mode 8622 * 1: manual mode 8623 * 2: native EC "auto" mode (recommended, hardware default) 8624 * 8625 * pwm*: set speed in manual mode, ignored otherwise. 8626 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8627 * interpolation. 8628 * 8629 * fan*_input: tachometer reading, RPM 8630 * 8631 * 8632 * SYSFS fan layout: extensions 8633 * 8634 * fan_watchdog (driver): 8635 * fan watchdog interval in seconds, 0 disables (default), max 120 8636 */ 8637 8638 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8639 static ssize_t fan_pwm1_enable_show(struct device *dev, 8640 struct device_attribute *attr, 8641 char *buf) 8642 { 8643 int res, mode; 8644 u8 status; 8645 8646 res = fan_get_status_safe(&status); 8647 if (res) 8648 return res; 8649 8650 if (status & TP_EC_FAN_FULLSPEED) { 8651 mode = 0; 8652 } else if (status & TP_EC_FAN_AUTO) { 8653 mode = 2; 8654 } else 8655 mode = 1; 8656 8657 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8658 } 8659 8660 static ssize_t fan_pwm1_enable_store(struct device *dev, 8661 struct device_attribute *attr, 8662 const char *buf, size_t count) 8663 { 8664 unsigned long t; 8665 int res, level; 8666 8667 if (parse_strtoul(buf, 2, &t)) 8668 return -EINVAL; 8669 8670 tpacpi_disclose_usertask("hwmon pwm1_enable", 8671 "set fan mode to %lu\n", t); 8672 8673 switch (t) { 8674 case 0: 8675 level = TP_EC_FAN_FULLSPEED; 8676 break; 8677 case 1: 8678 level = TPACPI_FAN_LAST_LEVEL; 8679 break; 8680 case 2: 8681 level = TP_EC_FAN_AUTO; 8682 break; 8683 case 3: 8684 /* reserved for software-controlled auto mode */ 8685 return -ENOSYS; 8686 default: 8687 return -EINVAL; 8688 } 8689 8690 res = fan_set_level_safe(level); 8691 if (res == -ENXIO) 8692 return -EINVAL; 8693 else if (res < 0) 8694 return res; 8695 8696 fan_watchdog_reset(); 8697 8698 return count; 8699 } 8700 8701 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8702 fan_pwm1_enable_show, fan_pwm1_enable_store); 8703 8704 /* sysfs fan pwm1 ------------------------------------------------------ */ 8705 static ssize_t fan_pwm1_show(struct device *dev, 8706 struct device_attribute *attr, 8707 char *buf) 8708 { 8709 int res; 8710 u8 status; 8711 8712 res = fan_get_status_safe(&status); 8713 if (res) 8714 return res; 8715 8716 if ((status & 8717 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8718 status = fan_control_desired_level; 8719 8720 if (status > 7) 8721 status = 7; 8722 8723 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8724 } 8725 8726 static ssize_t fan_pwm1_store(struct device *dev, 8727 struct device_attribute *attr, 8728 const char *buf, size_t count) 8729 { 8730 unsigned long s; 8731 int rc; 8732 u8 status, newlevel; 8733 8734 if (parse_strtoul(buf, 255, &s)) 8735 return -EINVAL; 8736 8737 tpacpi_disclose_usertask("hwmon pwm1", 8738 "set fan speed to %lu\n", s); 8739 8740 /* scale down from 0-255 to 0-7 */ 8741 newlevel = (s >> 5) & 0x07; 8742 8743 if (mutex_lock_killable(&fan_mutex)) 8744 return -ERESTARTSYS; 8745 8746 rc = fan_get_status(&status); 8747 if (!rc && (status & 8748 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8749 rc = fan_set_level(newlevel); 8750 if (rc == -ENXIO) 8751 rc = -EINVAL; 8752 else if (!rc) { 8753 fan_update_desired_level(newlevel); 8754 fan_watchdog_reset(); 8755 } 8756 } 8757 8758 mutex_unlock(&fan_mutex); 8759 return (rc) ? rc : count; 8760 } 8761 8762 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8763 8764 /* sysfs fan fan1_input ------------------------------------------------ */ 8765 static ssize_t fan_fan1_input_show(struct device *dev, 8766 struct device_attribute *attr, 8767 char *buf) 8768 { 8769 int res; 8770 unsigned int speed; 8771 8772 res = fan_get_speed(&speed); 8773 if (res < 0) 8774 return res; 8775 8776 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8777 } 8778 8779 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8780 8781 /* sysfs fan fan2_input ------------------------------------------------ */ 8782 static ssize_t fan_fan2_input_show(struct device *dev, 8783 struct device_attribute *attr, 8784 char *buf) 8785 { 8786 int res; 8787 unsigned int speed; 8788 8789 res = fan2_get_speed(&speed); 8790 if (res < 0) 8791 return res; 8792 8793 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8794 } 8795 8796 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8797 8798 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8799 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8800 { 8801 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8802 } 8803 8804 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8805 size_t count) 8806 { 8807 unsigned long t; 8808 8809 if (parse_strtoul(buf, 120, &t)) 8810 return -EINVAL; 8811 8812 if (!fan_control_allowed) 8813 return -EPERM; 8814 8815 fan_watchdog_maxinterval = t; 8816 fan_watchdog_reset(); 8817 8818 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8819 8820 return count; 8821 } 8822 static DRIVER_ATTR_RW(fan_watchdog); 8823 8824 /* --------------------------------------------------------------------- */ 8825 static struct attribute *fan_attributes[] = { 8826 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8827 &dev_attr_fan1_input.attr, 8828 NULL, /* for fan2_input */ 8829 NULL 8830 }; 8831 8832 static const struct attribute_group fan_attr_group = { 8833 .attrs = fan_attributes, 8834 }; 8835 8836 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8837 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8838 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8839 8840 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8841 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8842 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8843 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8844 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8845 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8846 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8847 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8848 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8849 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8850 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8851 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8852 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8853 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8854 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8855 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */ 8856 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8857 TPACPI_Q_LNV3('N', '3', '2', TPACPI_FAN_2CTL), /* X1 Carbon (9th gen) */ 8858 }; 8859 8860 static int __init fan_init(struct ibm_init_struct *iibm) 8861 { 8862 int rc; 8863 unsigned long quirks; 8864 8865 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8866 "initializing fan subdriver\n"); 8867 8868 mutex_init(&fan_mutex); 8869 fan_status_access_mode = TPACPI_FAN_NONE; 8870 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8871 fan_control_commands = 0; 8872 fan_watchdog_maxinterval = 0; 8873 tp_features.fan_ctrl_status_undef = 0; 8874 tp_features.second_fan = 0; 8875 tp_features.second_fan_ctl = 0; 8876 fan_control_desired_level = 7; 8877 8878 if (tpacpi_is_ibm()) { 8879 TPACPI_ACPIHANDLE_INIT(fans); 8880 TPACPI_ACPIHANDLE_INIT(gfan); 8881 TPACPI_ACPIHANDLE_INIT(sfan); 8882 } 8883 8884 quirks = tpacpi_check_quirks(fan_quirk_table, 8885 ARRAY_SIZE(fan_quirk_table)); 8886 8887 if (gfan_handle) { 8888 /* 570, 600e/x, 770e, 770x */ 8889 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8890 } else { 8891 /* all other ThinkPads: note that even old-style 8892 * ThinkPad ECs supports the fan control register */ 8893 if (likely(acpi_ec_read(fan_status_offset, 8894 &fan_control_initial_status))) { 8895 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8896 if (quirks & TPACPI_FAN_Q1) 8897 fan_quirk1_setup(); 8898 if (quirks & TPACPI_FAN_2FAN) { 8899 tp_features.second_fan = 1; 8900 pr_info("secondary fan support enabled\n"); 8901 } 8902 if (quirks & TPACPI_FAN_2CTL) { 8903 tp_features.second_fan = 1; 8904 tp_features.second_fan_ctl = 1; 8905 pr_info("secondary fan control enabled\n"); 8906 } 8907 } else { 8908 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8909 return 1; 8910 } 8911 } 8912 8913 if (sfan_handle) { 8914 /* 570, 770x-JL */ 8915 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8916 fan_control_commands |= 8917 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8918 } else { 8919 if (!gfan_handle) { 8920 /* gfan without sfan means no fan control */ 8921 /* all other models implement TP EC 0x2f control */ 8922 8923 if (fans_handle) { 8924 /* X31, X40, X41 */ 8925 fan_control_access_mode = 8926 TPACPI_FAN_WR_ACPI_FANS; 8927 fan_control_commands |= 8928 TPACPI_FAN_CMD_SPEED | 8929 TPACPI_FAN_CMD_LEVEL | 8930 TPACPI_FAN_CMD_ENABLE; 8931 } else { 8932 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8933 fan_control_commands |= 8934 TPACPI_FAN_CMD_LEVEL | 8935 TPACPI_FAN_CMD_ENABLE; 8936 } 8937 } 8938 } 8939 8940 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8941 "fan is %s, modes %d, %d\n", 8942 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8943 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8944 fan_status_access_mode, fan_control_access_mode); 8945 8946 /* fan control master switch */ 8947 if (!fan_control_allowed) { 8948 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8949 fan_control_commands = 0; 8950 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8951 "fan control features disabled by parameter\n"); 8952 } 8953 8954 /* update fan_control_desired_level */ 8955 if (fan_status_access_mode != TPACPI_FAN_NONE) 8956 fan_get_status_safe(NULL); 8957 8958 if (fan_status_access_mode != TPACPI_FAN_NONE || 8959 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8960 if (tp_features.second_fan) { 8961 /* attach second fan tachometer */ 8962 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8963 &dev_attr_fan2_input.attr; 8964 } 8965 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8966 &fan_attr_group); 8967 if (rc < 0) 8968 return rc; 8969 8970 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8971 &driver_attr_fan_watchdog); 8972 if (rc < 0) { 8973 sysfs_remove_group(&tpacpi_hwmon->kobj, 8974 &fan_attr_group); 8975 return rc; 8976 } 8977 return 0; 8978 } else 8979 return 1; 8980 } 8981 8982 static void fan_exit(void) 8983 { 8984 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8985 "cancelling any pending fan watchdog tasks\n"); 8986 8987 /* FIXME: can we really do this unconditionally? */ 8988 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8989 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8990 &driver_attr_fan_watchdog); 8991 8992 cancel_delayed_work(&fan_watchdog_task); 8993 flush_workqueue(tpacpi_wq); 8994 } 8995 8996 static void fan_suspend(void) 8997 { 8998 int rc; 8999 9000 if (!fan_control_allowed) 9001 return; 9002 9003 /* Store fan status in cache */ 9004 fan_control_resume_level = 0; 9005 rc = fan_get_status_safe(&fan_control_resume_level); 9006 if (rc < 0) 9007 pr_notice("failed to read fan level for later restore during resume: %d\n", 9008 rc); 9009 9010 /* if it is undefined, don't attempt to restore it. 9011 * KEEP THIS LAST */ 9012 if (tp_features.fan_ctrl_status_undef) 9013 fan_control_resume_level = 0; 9014 } 9015 9016 static void fan_resume(void) 9017 { 9018 u8 current_level = 7; 9019 bool do_set = false; 9020 int rc; 9021 9022 /* DSDT *always* updates status on resume */ 9023 tp_features.fan_ctrl_status_undef = 0; 9024 9025 if (!fan_control_allowed || 9026 !fan_control_resume_level || 9027 (fan_get_status_safe(¤t_level) < 0)) 9028 return; 9029 9030 switch (fan_control_access_mode) { 9031 case TPACPI_FAN_WR_ACPI_SFAN: 9032 /* never decrease fan level */ 9033 do_set = (fan_control_resume_level > current_level); 9034 break; 9035 case TPACPI_FAN_WR_ACPI_FANS: 9036 case TPACPI_FAN_WR_TPEC: 9037 /* never decrease fan level, scale is: 9038 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9039 * 9040 * We expect the firmware to set either 7 or AUTO, but we 9041 * handle FULLSPEED out of paranoia. 9042 * 9043 * So, we can safely only restore FULLSPEED or 7, anything 9044 * else could slow the fan. Restoring AUTO is useless, at 9045 * best that's exactly what the DSDT already set (it is the 9046 * slower it uses). 9047 * 9048 * Always keep in mind that the DSDT *will* have set the 9049 * fans to what the vendor supposes is the best level. We 9050 * muck with it only to speed the fan up. 9051 */ 9052 if (fan_control_resume_level != 7 && 9053 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9054 return; 9055 else 9056 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9057 (current_level != fan_control_resume_level); 9058 break; 9059 default: 9060 return; 9061 } 9062 if (do_set) { 9063 pr_notice("restoring fan level to 0x%02x\n", 9064 fan_control_resume_level); 9065 rc = fan_set_level_safe(fan_control_resume_level); 9066 if (rc < 0) 9067 pr_notice("failed to restore fan level: %d\n", rc); 9068 } 9069 } 9070 9071 static int fan_read(struct seq_file *m) 9072 { 9073 int rc; 9074 u8 status; 9075 unsigned int speed = 0; 9076 9077 switch (fan_status_access_mode) { 9078 case TPACPI_FAN_RD_ACPI_GFAN: 9079 /* 570, 600e/x, 770e, 770x */ 9080 rc = fan_get_status_safe(&status); 9081 if (rc < 0) 9082 return rc; 9083 9084 seq_printf(m, "status:\t\t%s\n" 9085 "level:\t\t%d\n", 9086 (status != 0) ? "enabled" : "disabled", status); 9087 break; 9088 9089 case TPACPI_FAN_RD_TPEC: 9090 /* all except 570, 600e/x, 770e, 770x */ 9091 rc = fan_get_status_safe(&status); 9092 if (rc < 0) 9093 return rc; 9094 9095 seq_printf(m, "status:\t\t%s\n", 9096 (status != 0) ? "enabled" : "disabled"); 9097 9098 rc = fan_get_speed(&speed); 9099 if (rc < 0) 9100 return rc; 9101 9102 seq_printf(m, "speed:\t\t%d\n", speed); 9103 9104 if (status & TP_EC_FAN_FULLSPEED) 9105 /* Disengaged mode takes precedence */ 9106 seq_printf(m, "level:\t\tdisengaged\n"); 9107 else if (status & TP_EC_FAN_AUTO) 9108 seq_printf(m, "level:\t\tauto\n"); 9109 else 9110 seq_printf(m, "level:\t\t%d\n", status); 9111 break; 9112 9113 case TPACPI_FAN_NONE: 9114 default: 9115 seq_printf(m, "status:\t\tnot supported\n"); 9116 } 9117 9118 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9119 seq_printf(m, "commands:\tlevel <level>"); 9120 9121 switch (fan_control_access_mode) { 9122 case TPACPI_FAN_WR_ACPI_SFAN: 9123 seq_printf(m, " (<level> is 0-7)\n"); 9124 break; 9125 9126 default: 9127 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9128 break; 9129 } 9130 } 9131 9132 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9133 seq_printf(m, "commands:\tenable, disable\n" 9134 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9135 9136 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9137 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9138 9139 return 0; 9140 } 9141 9142 static int fan_write_cmd_level(const char *cmd, int *rc) 9143 { 9144 int level; 9145 9146 if (strlencmp(cmd, "level auto") == 0) 9147 level = TP_EC_FAN_AUTO; 9148 else if ((strlencmp(cmd, "level disengaged") == 0) | 9149 (strlencmp(cmd, "level full-speed") == 0)) 9150 level = TP_EC_FAN_FULLSPEED; 9151 else if (sscanf(cmd, "level %d", &level) != 1) 9152 return 0; 9153 9154 *rc = fan_set_level_safe(level); 9155 if (*rc == -ENXIO) 9156 pr_err("level command accepted for unsupported access mode %d\n", 9157 fan_control_access_mode); 9158 else if (!*rc) 9159 tpacpi_disclose_usertask("procfs fan", 9160 "set level to %d\n", level); 9161 9162 return 1; 9163 } 9164 9165 static int fan_write_cmd_enable(const char *cmd, int *rc) 9166 { 9167 if (strlencmp(cmd, "enable") != 0) 9168 return 0; 9169 9170 *rc = fan_set_enable(); 9171 if (*rc == -ENXIO) 9172 pr_err("enable command accepted for unsupported access mode %d\n", 9173 fan_control_access_mode); 9174 else if (!*rc) 9175 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9176 9177 return 1; 9178 } 9179 9180 static int fan_write_cmd_disable(const char *cmd, int *rc) 9181 { 9182 if (strlencmp(cmd, "disable") != 0) 9183 return 0; 9184 9185 *rc = fan_set_disable(); 9186 if (*rc == -ENXIO) 9187 pr_err("disable command accepted for unsupported access mode %d\n", 9188 fan_control_access_mode); 9189 else if (!*rc) 9190 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9191 9192 return 1; 9193 } 9194 9195 static int fan_write_cmd_speed(const char *cmd, int *rc) 9196 { 9197 int speed; 9198 9199 /* TODO: 9200 * Support speed <low> <medium> <high> ? */ 9201 9202 if (sscanf(cmd, "speed %d", &speed) != 1) 9203 return 0; 9204 9205 *rc = fan_set_speed(speed); 9206 if (*rc == -ENXIO) 9207 pr_err("speed command accepted for unsupported access mode %d\n", 9208 fan_control_access_mode); 9209 else if (!*rc) 9210 tpacpi_disclose_usertask("procfs fan", 9211 "set speed to %d\n", speed); 9212 9213 return 1; 9214 } 9215 9216 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9217 { 9218 int interval; 9219 9220 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9221 return 0; 9222 9223 if (interval < 0 || interval > 120) 9224 *rc = -EINVAL; 9225 else { 9226 fan_watchdog_maxinterval = interval; 9227 tpacpi_disclose_usertask("procfs fan", 9228 "set watchdog timer to %d\n", 9229 interval); 9230 } 9231 9232 return 1; 9233 } 9234 9235 static int fan_write(char *buf) 9236 { 9237 char *cmd; 9238 int rc = 0; 9239 9240 while (!rc && (cmd = strsep(&buf, ","))) { 9241 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9242 fan_write_cmd_level(cmd, &rc)) && 9243 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9244 (fan_write_cmd_enable(cmd, &rc) || 9245 fan_write_cmd_disable(cmd, &rc) || 9246 fan_write_cmd_watchdog(cmd, &rc))) && 9247 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9248 fan_write_cmd_speed(cmd, &rc)) 9249 ) 9250 rc = -EINVAL; 9251 else if (!rc) 9252 fan_watchdog_reset(); 9253 } 9254 9255 return rc; 9256 } 9257 9258 static struct ibm_struct fan_driver_data = { 9259 .name = "fan", 9260 .read = fan_read, 9261 .write = fan_write, 9262 .exit = fan_exit, 9263 .suspend = fan_suspend, 9264 .resume = fan_resume, 9265 }; 9266 9267 /************************************************************************* 9268 * Mute LED subdriver 9269 */ 9270 9271 #define TPACPI_LED_MAX 2 9272 9273 struct tp_led_table { 9274 acpi_string name; 9275 int on_value; 9276 int off_value; 9277 int state; 9278 }; 9279 9280 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9281 [LED_AUDIO_MUTE] = { 9282 .name = "SSMS", 9283 .on_value = 1, 9284 .off_value = 0, 9285 }, 9286 [LED_AUDIO_MICMUTE] = { 9287 .name = "MMTS", 9288 .on_value = 2, 9289 .off_value = 0, 9290 }, 9291 }; 9292 9293 static int mute_led_on_off(struct tp_led_table *t, bool state) 9294 { 9295 acpi_handle temp; 9296 int output; 9297 9298 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9299 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9300 return -EIO; 9301 } 9302 9303 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9304 state ? t->on_value : t->off_value)) 9305 return -EIO; 9306 9307 t->state = state; 9308 return state; 9309 } 9310 9311 static int tpacpi_led_set(int whichled, bool on) 9312 { 9313 struct tp_led_table *t; 9314 9315 t = &led_tables[whichled]; 9316 if (t->state < 0 || t->state == on) 9317 return t->state; 9318 return mute_led_on_off(t, on); 9319 } 9320 9321 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9322 enum led_brightness brightness) 9323 { 9324 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9325 } 9326 9327 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9328 enum led_brightness brightness) 9329 { 9330 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9331 } 9332 9333 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9334 [LED_AUDIO_MUTE] = { 9335 .name = "platform::mute", 9336 .max_brightness = 1, 9337 .brightness_set_blocking = tpacpi_led_mute_set, 9338 .default_trigger = "audio-mute", 9339 }, 9340 [LED_AUDIO_MICMUTE] = { 9341 .name = "platform::micmute", 9342 .max_brightness = 1, 9343 .brightness_set_blocking = tpacpi_led_micmute_set, 9344 .default_trigger = "audio-micmute", 9345 }, 9346 }; 9347 9348 static int mute_led_init(struct ibm_init_struct *iibm) 9349 { 9350 acpi_handle temp; 9351 int i, err; 9352 9353 for (i = 0; i < TPACPI_LED_MAX; i++) { 9354 struct tp_led_table *t = &led_tables[i]; 9355 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9356 t->state = -ENODEV; 9357 continue; 9358 } 9359 9360 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9361 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9362 if (err < 0) { 9363 while (i--) 9364 led_classdev_unregister(&mute_led_cdev[i]); 9365 return err; 9366 } 9367 } 9368 return 0; 9369 } 9370 9371 static void mute_led_exit(void) 9372 { 9373 int i; 9374 9375 for (i = 0; i < TPACPI_LED_MAX; i++) { 9376 led_classdev_unregister(&mute_led_cdev[i]); 9377 tpacpi_led_set(i, false); 9378 } 9379 } 9380 9381 static void mute_led_resume(void) 9382 { 9383 int i; 9384 9385 for (i = 0; i < TPACPI_LED_MAX; i++) { 9386 struct tp_led_table *t = &led_tables[i]; 9387 if (t->state >= 0) 9388 mute_led_on_off(t, t->state); 9389 } 9390 } 9391 9392 static struct ibm_struct mute_led_driver_data = { 9393 .name = "mute_led", 9394 .exit = mute_led_exit, 9395 .resume = mute_led_resume, 9396 }; 9397 9398 /* 9399 * Battery Wear Control Driver 9400 * Contact: Ognjen Galic <smclt30p@gmail.com> 9401 */ 9402 9403 /* Metadata */ 9404 9405 #define GET_START "BCTG" 9406 #define SET_START "BCCS" 9407 #define GET_STOP "BCSG" 9408 #define SET_STOP "BCSS" 9409 9410 enum { 9411 BAT_ANY = 0, 9412 BAT_PRIMARY = 1, 9413 BAT_SECONDARY = 2 9414 }; 9415 9416 enum { 9417 /* Error condition bit */ 9418 METHOD_ERR = BIT(31), 9419 }; 9420 9421 enum { 9422 /* This is used in the get/set helpers */ 9423 THRESHOLD_START, 9424 THRESHOLD_STOP, 9425 }; 9426 9427 struct tpacpi_battery_data { 9428 int charge_start; 9429 int start_support; 9430 int charge_stop; 9431 int stop_support; 9432 }; 9433 9434 struct tpacpi_battery_driver_data { 9435 struct tpacpi_battery_data batteries[3]; 9436 int individual_addressing; 9437 }; 9438 9439 static struct tpacpi_battery_driver_data battery_info; 9440 9441 /* ACPI helpers/functions/probes */ 9442 9443 /** 9444 * This evaluates a ACPI method call specific to the battery 9445 * ACPI extension. The specifics are that an error is marked 9446 * in the 32rd bit of the response, so we just check that here. 9447 */ 9448 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9449 { 9450 int response; 9451 9452 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9453 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9454 return AE_ERROR; 9455 } 9456 if (response & METHOD_ERR) { 9457 acpi_handle_err(hkey_handle, 9458 "%s evaluated but flagged as error", method); 9459 return AE_ERROR; 9460 } 9461 *ret = response; 9462 return AE_OK; 9463 } 9464 9465 static int tpacpi_battery_get(int what, int battery, int *ret) 9466 { 9467 switch (what) { 9468 case THRESHOLD_START: 9469 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9470 return -ENODEV; 9471 9472 /* The value is in the low 8 bits of the response */ 9473 *ret = *ret & 0xFF; 9474 return 0; 9475 case THRESHOLD_STOP: 9476 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9477 return -ENODEV; 9478 /* Value is in lower 8 bits */ 9479 *ret = *ret & 0xFF; 9480 /* 9481 * On the stop value, if we return 0 that 9482 * does not make any sense. 0 means Default, which 9483 * means that charging stops at 100%, so we return 9484 * that. 9485 */ 9486 if (*ret == 0) 9487 *ret = 100; 9488 return 0; 9489 default: 9490 pr_crit("wrong parameter: %d", what); 9491 return -EINVAL; 9492 } 9493 } 9494 9495 static int tpacpi_battery_set(int what, int battery, int value) 9496 { 9497 int param, ret; 9498 /* The first 8 bits are the value of the threshold */ 9499 param = value; 9500 /* The battery ID is in bits 8-9, 2 bits */ 9501 param |= battery << 8; 9502 9503 switch (what) { 9504 case THRESHOLD_START: 9505 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9506 pr_err("failed to set charge threshold on battery %d", 9507 battery); 9508 return -ENODEV; 9509 } 9510 return 0; 9511 case THRESHOLD_STOP: 9512 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9513 pr_err("failed to set stop threshold: %d", battery); 9514 return -ENODEV; 9515 } 9516 return 0; 9517 default: 9518 pr_crit("wrong parameter: %d", what); 9519 return -EINVAL; 9520 } 9521 } 9522 9523 static int tpacpi_battery_probe(int battery) 9524 { 9525 int ret = 0; 9526 9527 memset(&battery_info.batteries[battery], 0, 9528 sizeof(battery_info.batteries[battery])); 9529 9530 /* 9531 * 1) Get the current start threshold 9532 * 2) Check for support 9533 * 3) Get the current stop threshold 9534 * 4) Check for support 9535 */ 9536 if (acpi_has_method(hkey_handle, GET_START)) { 9537 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9538 pr_err("Error probing battery %d\n", battery); 9539 return -ENODEV; 9540 } 9541 /* Individual addressing is in bit 9 */ 9542 if (ret & BIT(9)) 9543 battery_info.individual_addressing = true; 9544 /* Support is marked in bit 8 */ 9545 if (ret & BIT(8)) 9546 battery_info.batteries[battery].start_support = 1; 9547 else 9548 return -ENODEV; 9549 if (tpacpi_battery_get(THRESHOLD_START, battery, 9550 &battery_info.batteries[battery].charge_start)) { 9551 pr_err("Error probing battery %d\n", battery); 9552 return -ENODEV; 9553 } 9554 } 9555 if (acpi_has_method(hkey_handle, GET_STOP)) { 9556 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9557 pr_err("Error probing battery stop; %d\n", battery); 9558 return -ENODEV; 9559 } 9560 /* Support is marked in bit 8 */ 9561 if (ret & BIT(8)) 9562 battery_info.batteries[battery].stop_support = 1; 9563 else 9564 return -ENODEV; 9565 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9566 &battery_info.batteries[battery].charge_stop)) { 9567 pr_err("Error probing battery stop: %d\n", battery); 9568 return -ENODEV; 9569 } 9570 } 9571 pr_info("battery %d registered (start %d, stop %d)", 9572 battery, 9573 battery_info.batteries[battery].charge_start, 9574 battery_info.batteries[battery].charge_stop); 9575 9576 return 0; 9577 } 9578 9579 /* General helper functions */ 9580 9581 static int tpacpi_battery_get_id(const char *battery_name) 9582 { 9583 9584 if (strcmp(battery_name, "BAT0") == 0 || 9585 tp_features.battery_force_primary) 9586 return BAT_PRIMARY; 9587 if (strcmp(battery_name, "BAT1") == 0) 9588 return BAT_SECONDARY; 9589 /* 9590 * If for some reason the battery is not BAT0 nor is it 9591 * BAT1, we will assume it's the default, first battery, 9592 * AKA primary. 9593 */ 9594 pr_warn("unknown battery %s, assuming primary", battery_name); 9595 return BAT_PRIMARY; 9596 } 9597 9598 /* sysfs interface */ 9599 9600 static ssize_t tpacpi_battery_store(int what, 9601 struct device *dev, 9602 const char *buf, size_t count) 9603 { 9604 struct power_supply *supply = to_power_supply(dev); 9605 unsigned long value; 9606 int battery, rval; 9607 /* 9608 * Some systems have support for more than 9609 * one battery. If that is the case, 9610 * tpacpi_battery_probe marked that addressing 9611 * them individually is supported, so we do that 9612 * based on the device struct. 9613 * 9614 * On systems that are not supported, we assume 9615 * the primary as most of the ACPI calls fail 9616 * with "Any Battery" as the parameter. 9617 */ 9618 if (battery_info.individual_addressing) 9619 /* BAT_PRIMARY or BAT_SECONDARY */ 9620 battery = tpacpi_battery_get_id(supply->desc->name); 9621 else 9622 battery = BAT_PRIMARY; 9623 9624 rval = kstrtoul(buf, 10, &value); 9625 if (rval) 9626 return rval; 9627 9628 switch (what) { 9629 case THRESHOLD_START: 9630 if (!battery_info.batteries[battery].start_support) 9631 return -ENODEV; 9632 /* valid values are [0, 99] */ 9633 if (value > 99) 9634 return -EINVAL; 9635 if (value > battery_info.batteries[battery].charge_stop) 9636 return -EINVAL; 9637 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9638 return -ENODEV; 9639 battery_info.batteries[battery].charge_start = value; 9640 return count; 9641 9642 case THRESHOLD_STOP: 9643 if (!battery_info.batteries[battery].stop_support) 9644 return -ENODEV; 9645 /* valid values are [1, 100] */ 9646 if (value < 1 || value > 100) 9647 return -EINVAL; 9648 if (value < battery_info.batteries[battery].charge_start) 9649 return -EINVAL; 9650 battery_info.batteries[battery].charge_stop = value; 9651 /* 9652 * When 100 is passed to stop, we need to flip 9653 * it to 0 as that the EC understands that as 9654 * "Default", which will charge to 100% 9655 */ 9656 if (value == 100) 9657 value = 0; 9658 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9659 return -EINVAL; 9660 return count; 9661 default: 9662 pr_crit("Wrong parameter: %d", what); 9663 return -EINVAL; 9664 } 9665 return count; 9666 } 9667 9668 static ssize_t tpacpi_battery_show(int what, 9669 struct device *dev, 9670 char *buf) 9671 { 9672 struct power_supply *supply = to_power_supply(dev); 9673 int ret, battery; 9674 /* 9675 * Some systems have support for more than 9676 * one battery. If that is the case, 9677 * tpacpi_battery_probe marked that addressing 9678 * them individually is supported, so we; 9679 * based on the device struct. 9680 * 9681 * On systems that are not supported, we assume 9682 * the primary as most of the ACPI calls fail 9683 * with "Any Battery" as the parameter. 9684 */ 9685 if (battery_info.individual_addressing) 9686 /* BAT_PRIMARY or BAT_SECONDARY */ 9687 battery = tpacpi_battery_get_id(supply->desc->name); 9688 else 9689 battery = BAT_PRIMARY; 9690 if (tpacpi_battery_get(what, battery, &ret)) 9691 return -ENODEV; 9692 return sprintf(buf, "%d\n", ret); 9693 } 9694 9695 static ssize_t charge_control_start_threshold_show(struct device *device, 9696 struct device_attribute *attr, 9697 char *buf) 9698 { 9699 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9700 } 9701 9702 static ssize_t charge_control_end_threshold_show(struct device *device, 9703 struct device_attribute *attr, 9704 char *buf) 9705 { 9706 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9707 } 9708 9709 static ssize_t charge_control_start_threshold_store(struct device *dev, 9710 struct device_attribute *attr, 9711 const char *buf, size_t count) 9712 { 9713 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9714 } 9715 9716 static ssize_t charge_control_end_threshold_store(struct device *dev, 9717 struct device_attribute *attr, 9718 const char *buf, size_t count) 9719 { 9720 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9721 } 9722 9723 static DEVICE_ATTR_RW(charge_control_start_threshold); 9724 static DEVICE_ATTR_RW(charge_control_end_threshold); 9725 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9726 charge_start_threshold, 9727 0644, 9728 charge_control_start_threshold_show, 9729 charge_control_start_threshold_store 9730 ); 9731 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9732 charge_stop_threshold, 9733 0644, 9734 charge_control_end_threshold_show, 9735 charge_control_end_threshold_store 9736 ); 9737 9738 static struct attribute *tpacpi_battery_attrs[] = { 9739 &dev_attr_charge_control_start_threshold.attr, 9740 &dev_attr_charge_control_end_threshold.attr, 9741 &dev_attr_charge_start_threshold.attr, 9742 &dev_attr_charge_stop_threshold.attr, 9743 NULL, 9744 }; 9745 9746 ATTRIBUTE_GROUPS(tpacpi_battery); 9747 9748 /* ACPI battery hooking */ 9749 9750 static int tpacpi_battery_add(struct power_supply *battery) 9751 { 9752 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9753 9754 if (tpacpi_battery_probe(batteryid)) 9755 return -ENODEV; 9756 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9757 return -ENODEV; 9758 return 0; 9759 } 9760 9761 static int tpacpi_battery_remove(struct power_supply *battery) 9762 { 9763 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9764 return 0; 9765 } 9766 9767 static struct acpi_battery_hook battery_hook = { 9768 .add_battery = tpacpi_battery_add, 9769 .remove_battery = tpacpi_battery_remove, 9770 .name = "ThinkPad Battery Extension", 9771 }; 9772 9773 /* Subdriver init/exit */ 9774 9775 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9776 /* 9777 * Individual addressing is broken on models that expose the 9778 * primary battery as BAT1. 9779 */ 9780 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9781 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9782 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9783 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9784 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9785 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9786 }; 9787 9788 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9789 { 9790 memset(&battery_info, 0, sizeof(battery_info)); 9791 9792 tp_features.battery_force_primary = tpacpi_check_quirks( 9793 battery_quirk_table, 9794 ARRAY_SIZE(battery_quirk_table)); 9795 9796 battery_hook_register(&battery_hook); 9797 return 0; 9798 } 9799 9800 static void tpacpi_battery_exit(void) 9801 { 9802 battery_hook_unregister(&battery_hook); 9803 } 9804 9805 static struct ibm_struct battery_driver_data = { 9806 .name = "battery", 9807 .exit = tpacpi_battery_exit, 9808 }; 9809 9810 /************************************************************************* 9811 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9812 */ 9813 9814 static int lcdshadow_state; 9815 9816 static int lcdshadow_on_off(bool state) 9817 { 9818 acpi_handle set_shadow_handle; 9819 int output; 9820 9821 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { 9822 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); 9823 return -EIO; 9824 } 9825 9826 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) 9827 return -EIO; 9828 9829 lcdshadow_state = state; 9830 return 0; 9831 } 9832 9833 static int lcdshadow_set(bool on) 9834 { 9835 if (lcdshadow_state < 0) 9836 return lcdshadow_state; 9837 if (lcdshadow_state == on) 9838 return 0; 9839 return lcdshadow_on_off(on); 9840 } 9841 9842 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9843 { 9844 acpi_handle get_shadow_handle; 9845 int output; 9846 9847 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { 9848 lcdshadow_state = -ENODEV; 9849 return 0; 9850 } 9851 9852 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { 9853 lcdshadow_state = -EIO; 9854 return -EIO; 9855 } 9856 if (!(output & 0x10000)) { 9857 lcdshadow_state = -ENODEV; 9858 return 0; 9859 } 9860 lcdshadow_state = output & 0x1; 9861 9862 return 0; 9863 } 9864 9865 static void lcdshadow_resume(void) 9866 { 9867 if (lcdshadow_state >= 0) 9868 lcdshadow_on_off(lcdshadow_state); 9869 } 9870 9871 static int lcdshadow_read(struct seq_file *m) 9872 { 9873 if (lcdshadow_state < 0) { 9874 seq_puts(m, "status:\t\tnot supported\n"); 9875 } else { 9876 seq_printf(m, "status:\t\t%d\n", lcdshadow_state); 9877 seq_puts(m, "commands:\t0, 1\n"); 9878 } 9879 9880 return 0; 9881 } 9882 9883 static int lcdshadow_write(char *buf) 9884 { 9885 char *cmd; 9886 int res, state = -EINVAL; 9887 9888 if (lcdshadow_state < 0) 9889 return -ENODEV; 9890 9891 while ((cmd = strsep(&buf, ","))) { 9892 res = kstrtoint(cmd, 10, &state); 9893 if (res < 0) 9894 return res; 9895 } 9896 9897 if (state >= 2 || state < 0) 9898 return -EINVAL; 9899 9900 return lcdshadow_set(state); 9901 } 9902 9903 static struct ibm_struct lcdshadow_driver_data = { 9904 .name = "lcdshadow", 9905 .resume = lcdshadow_resume, 9906 .read = lcdshadow_read, 9907 .write = lcdshadow_write, 9908 }; 9909 9910 /************************************************************************* 9911 * Thinkpad sensor interfaces 9912 */ 9913 9914 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 9915 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 9916 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 9917 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 9918 9919 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9920 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9921 9922 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 9923 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 9924 9925 static bool has_palmsensor; 9926 static bool has_lapsensor; 9927 static bool palm_state; 9928 static bool lap_state; 9929 static int dytc_version; 9930 9931 static int dytc_command(int command, int *output) 9932 { 9933 acpi_handle dytc_handle; 9934 9935 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9936 /* Platform doesn't support DYTC */ 9937 return -ENODEV; 9938 } 9939 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9940 return -EIO; 9941 return 0; 9942 } 9943 9944 static int dytc_get_version(void) 9945 { 9946 int err, output; 9947 9948 /* Check if we've been called before - and just return cached value */ 9949 if (dytc_version) 9950 return dytc_version; 9951 9952 /* Otherwise query DYTC and extract version information */ 9953 err = dytc_command(DYTC_CMD_QUERY, &output); 9954 /* 9955 * If support isn't available (ENODEV) then don't return an error 9956 * and don't create the sysfs group 9957 */ 9958 if (err == -ENODEV) 9959 return 0; 9960 /* For all other errors we can flag the failure */ 9961 if (err) 9962 return err; 9963 9964 /* Check DYTC is enabled and supports mode setting */ 9965 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 9966 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 9967 9968 return 0; 9969 } 9970 9971 static int lapsensor_get(bool *present, bool *state) 9972 { 9973 int output, err; 9974 9975 *present = false; 9976 err = dytc_command(DYTC_CMD_GET, &output); 9977 if (err) 9978 return err; 9979 9980 *present = true; /*If we get his far, we have lapmode support*/ 9981 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9982 return 0; 9983 } 9984 9985 static int palmsensor_get(bool *present, bool *state) 9986 { 9987 acpi_handle psensor_handle; 9988 int output; 9989 9990 *present = false; 9991 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 9992 return -ENODEV; 9993 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 9994 return -EIO; 9995 9996 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 9997 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 9998 return 0; 9999 } 10000 10001 static void lapsensor_refresh(void) 10002 { 10003 bool state; 10004 int err; 10005 10006 if (has_lapsensor) { 10007 err = lapsensor_get(&has_lapsensor, &state); 10008 if (err) 10009 return; 10010 if (lap_state != state) { 10011 lap_state = state; 10012 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10013 } 10014 } 10015 } 10016 10017 static void palmsensor_refresh(void) 10018 { 10019 bool state; 10020 int err; 10021 10022 if (has_palmsensor) { 10023 err = palmsensor_get(&has_palmsensor, &state); 10024 if (err) 10025 return; 10026 if (palm_state != state) { 10027 palm_state = state; 10028 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10029 } 10030 } 10031 } 10032 10033 static ssize_t dytc_lapmode_show(struct device *dev, 10034 struct device_attribute *attr, 10035 char *buf) 10036 { 10037 if (has_lapsensor) 10038 return sysfs_emit(buf, "%d\n", lap_state); 10039 return sysfs_emit(buf, "\n"); 10040 } 10041 static DEVICE_ATTR_RO(dytc_lapmode); 10042 10043 static ssize_t palmsensor_show(struct device *dev, 10044 struct device_attribute *attr, 10045 char *buf) 10046 { 10047 if (has_palmsensor) 10048 return sysfs_emit(buf, "%d\n", palm_state); 10049 return sysfs_emit(buf, "\n"); 10050 } 10051 static DEVICE_ATTR_RO(palmsensor); 10052 10053 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10054 { 10055 int palm_err, lap_err, err; 10056 10057 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10058 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10059 /* 10060 * If support isn't available (ENODEV) for both devices then quit, but 10061 * don't return an error. 10062 */ 10063 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10064 return 0; 10065 /* Otherwise, if there was an error return it */ 10066 if (palm_err && (palm_err != -ENODEV)) 10067 return palm_err; 10068 if (lap_err && (lap_err != -ENODEV)) 10069 return lap_err; 10070 10071 if (has_palmsensor) { 10072 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 10073 if (err) 10074 return err; 10075 } 10076 10077 /* Check if we know the DYTC version, if we don't then get it */ 10078 if (!dytc_version) { 10079 err = dytc_get_version(); 10080 if (err) 10081 return err; 10082 } 10083 /* 10084 * Platforms before DYTC version 5 claim to have a lap sensor, but it doesn't work, so we 10085 * ignore them 10086 */ 10087 if (has_lapsensor && (dytc_version >= 5)) { 10088 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 10089 if (err) 10090 return err; 10091 } 10092 return 0; 10093 } 10094 10095 static void proxsensor_exit(void) 10096 { 10097 if (has_lapsensor) 10098 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 10099 if (has_palmsensor) 10100 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 10101 } 10102 10103 static struct ibm_struct proxsensor_driver_data = { 10104 .name = "proximity-sensor", 10105 .exit = proxsensor_exit, 10106 }; 10107 10108 /************************************************************************* 10109 * DYTC Platform Profile interface 10110 */ 10111 10112 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10113 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10114 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10115 10116 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10117 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10118 10119 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10120 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10121 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10122 10123 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10124 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10125 #define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */ 10126 10127 #define DYTC_MODE_PERFORM 2 /* High power mode aka performance */ 10128 #define DYTC_MODE_LOWPOWER 3 /* Low power mode */ 10129 #define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */ 10130 #define DYTC_MODE_MMC_BALANCE 0 /* Default mode from MMC_GET, aka balanced */ 10131 10132 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10133 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10134 10135 #define DYTC_SET_COMMAND(function, mode, on) \ 10136 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10137 (mode) << DYTC_SET_MODE_BIT | \ 10138 (on) << DYTC_SET_VALID_BIT) 10139 10140 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0) 10141 10142 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1) 10143 10144 static bool dytc_profile_available; 10145 static enum platform_profile_option dytc_current_profile; 10146 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10147 static DEFINE_MUTEX(dytc_mutex); 10148 static bool dytc_mmc_get_available; 10149 10150 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 10151 { 10152 switch (dytcmode) { 10153 case DYTC_MODE_LOWPOWER: 10154 *profile = PLATFORM_PROFILE_LOW_POWER; 10155 break; 10156 case DYTC_MODE_BALANCE: 10157 case DYTC_MODE_MMC_BALANCE: 10158 *profile = PLATFORM_PROFILE_BALANCED; 10159 break; 10160 case DYTC_MODE_PERFORM: 10161 *profile = PLATFORM_PROFILE_PERFORMANCE; 10162 break; 10163 default: /* Unknown mode */ 10164 return -EINVAL; 10165 } 10166 return 0; 10167 } 10168 10169 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10170 { 10171 switch (profile) { 10172 case PLATFORM_PROFILE_LOW_POWER: 10173 *perfmode = DYTC_MODE_LOWPOWER; 10174 break; 10175 case PLATFORM_PROFILE_BALANCED: 10176 *perfmode = DYTC_MODE_BALANCE; 10177 break; 10178 case PLATFORM_PROFILE_PERFORMANCE: 10179 *perfmode = DYTC_MODE_PERFORM; 10180 break; 10181 default: /* Unknown profile */ 10182 return -EOPNOTSUPP; 10183 } 10184 return 0; 10185 } 10186 10187 /* 10188 * dytc_profile_get: Function to register with platform_profile 10189 * handler. Returns current platform profile. 10190 */ 10191 static int dytc_profile_get(struct platform_profile_handler *pprof, 10192 enum platform_profile_option *profile) 10193 { 10194 *profile = dytc_current_profile; 10195 return 0; 10196 } 10197 10198 /* 10199 * Helper function - check if we are in CQL mode and if we are 10200 * - disable CQL, 10201 * - run the command 10202 * - enable CQL 10203 * If not in CQL mode, just run the command 10204 */ 10205 static int dytc_cql_command(int command, int *output) 10206 { 10207 int err, cmd_err, dummy; 10208 int cur_funcmode; 10209 10210 /* Determine if we are in CQL mode. This alters the commands we do */ 10211 err = dytc_command(DYTC_CMD_GET, output); 10212 if (err) 10213 return err; 10214 10215 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10216 /* Check if we're OK to return immediately */ 10217 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10218 return 0; 10219 10220 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10221 atomic_inc(&dytc_ignore_event); 10222 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10223 if (err) 10224 return err; 10225 } 10226 10227 cmd_err = dytc_command(command, output); 10228 /* Check return condition after we've restored CQL state */ 10229 10230 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10231 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10232 if (err) 10233 return err; 10234 } 10235 return cmd_err; 10236 } 10237 10238 /* 10239 * dytc_profile_set: Function to register with platform_profile 10240 * handler. Sets current platform profile. 10241 */ 10242 static int dytc_profile_set(struct platform_profile_handler *pprof, 10243 enum platform_profile_option profile) 10244 { 10245 int output; 10246 int err; 10247 10248 if (!dytc_profile_available) 10249 return -ENODEV; 10250 10251 err = mutex_lock_interruptible(&dytc_mutex); 10252 if (err) 10253 return err; 10254 10255 if (profile == PLATFORM_PROFILE_BALANCED) { 10256 /* 10257 * To get back to balanced mode we need to issue a reset command. 10258 * Note we still need to disable CQL mode before hand and re-enable 10259 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10260 * stuck at 0 for aprox. 30 minutes. 10261 */ 10262 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10263 if (err) 10264 goto unlock; 10265 } else { 10266 int perfmode; 10267 10268 err = convert_profile_to_dytc(profile, &perfmode); 10269 if (err) 10270 goto unlock; 10271 10272 /* Determine if we are in CQL mode. This alters the commands we do */ 10273 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), &output); 10274 if (err) 10275 goto unlock; 10276 } 10277 /* Success - update current profile */ 10278 dytc_current_profile = profile; 10279 unlock: 10280 mutex_unlock(&dytc_mutex); 10281 return err; 10282 } 10283 10284 static void dytc_profile_refresh(void) 10285 { 10286 enum platform_profile_option profile; 10287 int output, err; 10288 int perfmode; 10289 10290 mutex_lock(&dytc_mutex); 10291 if (dytc_mmc_get_available) 10292 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10293 else 10294 err = dytc_cql_command(DYTC_CMD_GET, &output); 10295 mutex_unlock(&dytc_mutex); 10296 if (err) 10297 return; 10298 10299 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10300 convert_dytc_to_profile(perfmode, &profile); 10301 if (profile != dytc_current_profile) { 10302 dytc_current_profile = profile; 10303 platform_profile_notify(); 10304 } 10305 } 10306 10307 static struct platform_profile_handler dytc_profile = { 10308 .profile_get = dytc_profile_get, 10309 .profile_set = dytc_profile_set, 10310 }; 10311 10312 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10313 { 10314 int err, output; 10315 10316 /* Setup supported modes */ 10317 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10318 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10319 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10320 10321 dytc_profile_available = false; 10322 err = dytc_command(DYTC_CMD_QUERY, &output); 10323 /* 10324 * If support isn't available (ENODEV) then don't return an error 10325 * and don't create the sysfs group 10326 */ 10327 if (err == -ENODEV) 10328 return 0; 10329 /* For all other errors we can flag the failure */ 10330 if (err) 10331 return err; 10332 10333 /* Check if we know the DYTC version, if we don't then get it */ 10334 if (!dytc_version) { 10335 err = dytc_get_version(); 10336 if (err) 10337 return err; 10338 } 10339 /* Check DYTC is enabled and supports mode setting */ 10340 if (dytc_version >= 5) { 10341 dbg_printk(TPACPI_DBG_INIT, 10342 "DYTC version %d: thermal mode available\n", dytc_version); 10343 /* 10344 * Check if MMC_GET functionality available 10345 * Version > 6 and return success from MMC_GET command 10346 */ 10347 dytc_mmc_get_available = false; 10348 if (dytc_version >= 6) { 10349 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10350 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10351 dytc_mmc_get_available = true; 10352 } 10353 /* Create platform_profile structure and register */ 10354 err = platform_profile_register(&dytc_profile); 10355 /* 10356 * If for some reason platform_profiles aren't enabled 10357 * don't quit terminally. 10358 */ 10359 if (err) 10360 return 0; 10361 10362 dytc_profile_available = true; 10363 /* Ensure initial values are correct */ 10364 dytc_profile_refresh(); 10365 } 10366 return 0; 10367 } 10368 10369 static void dytc_profile_exit(void) 10370 { 10371 if (dytc_profile_available) { 10372 dytc_profile_available = false; 10373 platform_profile_remove(); 10374 } 10375 } 10376 10377 static struct ibm_struct dytc_profile_driver_data = { 10378 .name = "dytc-profile", 10379 .exit = dytc_profile_exit, 10380 }; 10381 10382 /************************************************************************* 10383 * Keyboard language interface 10384 */ 10385 10386 struct keyboard_lang_data { 10387 const char *lang_str; 10388 int lang_code; 10389 }; 10390 10391 static const struct keyboard_lang_data keyboard_lang_data[] = { 10392 {"be", 0x080c}, 10393 {"cz", 0x0405}, 10394 {"da", 0x0406}, 10395 {"de", 0x0c07}, 10396 {"en", 0x0000}, 10397 {"es", 0x2c0a}, 10398 {"et", 0x0425}, 10399 {"fr", 0x040c}, 10400 {"fr-ch", 0x100c}, 10401 {"hu", 0x040e}, 10402 {"it", 0x0410}, 10403 {"jp", 0x0411}, 10404 {"nl", 0x0413}, 10405 {"nn", 0x0414}, 10406 {"pl", 0x0415}, 10407 {"pt", 0x0816}, 10408 {"sl", 0x041b}, 10409 {"sv", 0x081d}, 10410 {"tr", 0x041f}, 10411 }; 10412 10413 static int set_keyboard_lang_command(int command) 10414 { 10415 acpi_handle sskl_handle; 10416 int output; 10417 10418 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10419 /* Platform doesn't support SSKL */ 10420 return -ENODEV; 10421 } 10422 10423 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10424 return -EIO; 10425 10426 return 0; 10427 } 10428 10429 static int get_keyboard_lang(int *output) 10430 { 10431 acpi_handle gskl_handle; 10432 int kbd_lang; 10433 10434 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10435 /* Platform doesn't support GSKL */ 10436 return -ENODEV; 10437 } 10438 10439 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10440 return -EIO; 10441 10442 /* 10443 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10444 * '(' and ')') keys which use layout dependent key-press emulation. 10445 */ 10446 if (kbd_lang & METHOD_ERR) 10447 return -ENODEV; 10448 10449 *output = kbd_lang; 10450 10451 return 0; 10452 } 10453 10454 /* sysfs keyboard language entry */ 10455 static ssize_t keyboard_lang_show(struct device *dev, 10456 struct device_attribute *attr, 10457 char *buf) 10458 { 10459 int output, err, i, len = 0; 10460 10461 err = get_keyboard_lang(&output); 10462 if (err) 10463 return err; 10464 10465 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10466 if (i) 10467 len += sysfs_emit_at(buf, len, "%s", " "); 10468 10469 if (output == keyboard_lang_data[i].lang_code) { 10470 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10471 } else { 10472 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10473 } 10474 } 10475 len += sysfs_emit_at(buf, len, "\n"); 10476 10477 return len; 10478 } 10479 10480 static ssize_t keyboard_lang_store(struct device *dev, 10481 struct device_attribute *attr, 10482 const char *buf, size_t count) 10483 { 10484 int err, i; 10485 bool lang_found = false; 10486 int lang_code = 0; 10487 10488 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10489 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10490 lang_code = keyboard_lang_data[i].lang_code; 10491 lang_found = true; 10492 break; 10493 } 10494 } 10495 10496 if (lang_found) { 10497 lang_code = lang_code | 1 << 24; 10498 10499 /* Set language code */ 10500 err = set_keyboard_lang_command(lang_code); 10501 if (err) 10502 return err; 10503 } else { 10504 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10505 return -EINVAL; 10506 } 10507 10508 tpacpi_disclose_usertask(attr->attr.name, 10509 "keyboard language is set to %s\n", buf); 10510 10511 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10512 10513 return count; 10514 } 10515 static DEVICE_ATTR_RW(keyboard_lang); 10516 10517 static struct attribute *kbdlang_attributes[] = { 10518 &dev_attr_keyboard_lang.attr, 10519 NULL 10520 }; 10521 10522 static const struct attribute_group kbdlang_attr_group = { 10523 .attrs = kbdlang_attributes, 10524 }; 10525 10526 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10527 { 10528 int err, output; 10529 10530 err = get_keyboard_lang(&output); 10531 /* 10532 * If support isn't available (ENODEV) then don't return an error 10533 * just don't create the sysfs group. 10534 */ 10535 if (err == -ENODEV) 10536 return 0; 10537 10538 if (err) 10539 return err; 10540 10541 /* Platform supports this feature - create the sysfs file */ 10542 return sysfs_create_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10543 } 10544 10545 static void kbdlang_exit(void) 10546 { 10547 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10548 } 10549 10550 static struct ibm_struct kbdlang_driver_data = { 10551 .name = "kbdlang", 10552 .exit = kbdlang_exit, 10553 }; 10554 10555 /************************************************************************* 10556 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10557 * and WLAN feature. 10558 */ 10559 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10560 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10561 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10562 static bool has_antennatype; 10563 static int wwan_antennatype; 10564 10565 static int dprc_command(int command, int *output) 10566 { 10567 acpi_handle dprc_handle; 10568 10569 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10570 /* Platform doesn't support DPRC */ 10571 return -ENODEV; 10572 } 10573 10574 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10575 return -EIO; 10576 10577 /* 10578 * METHOD_ERR gets returned on devices where few commands are not supported 10579 * for example command to get WWAN Antenna type command is not supported on 10580 * some devices. 10581 */ 10582 if (*output & METHOD_ERR) 10583 return -ENODEV; 10584 10585 return 0; 10586 } 10587 10588 static int get_wwan_antenna(int *wwan_antennatype) 10589 { 10590 int output, err; 10591 10592 /* Get current Antenna type */ 10593 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10594 if (err) 10595 return err; 10596 10597 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10598 *wwan_antennatype = 1; 10599 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10600 *wwan_antennatype = 2; 10601 else 10602 return -ENODEV; 10603 10604 return 0; 10605 } 10606 10607 /* sysfs wwan antenna type entry */ 10608 static ssize_t wwan_antenna_type_show(struct device *dev, 10609 struct device_attribute *attr, 10610 char *buf) 10611 { 10612 switch (wwan_antennatype) { 10613 case 1: 10614 return sysfs_emit(buf, "type a\n"); 10615 case 2: 10616 return sysfs_emit(buf, "type b\n"); 10617 default: 10618 return -ENODATA; 10619 } 10620 } 10621 static DEVICE_ATTR_RO(wwan_antenna_type); 10622 10623 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10624 { 10625 int wwanantenna_err, err; 10626 10627 wwanantenna_err = get_wwan_antenna(&wwan_antennatype); 10628 /* 10629 * If support isn't available (ENODEV) then quit, but don't 10630 * return an error. 10631 */ 10632 if (wwanantenna_err == -ENODEV) 10633 return 0; 10634 10635 /* if there was an error return it */ 10636 if (wwanantenna_err && (wwanantenna_err != -ENODEV)) 10637 return wwanantenna_err; 10638 else if (!wwanantenna_err) 10639 has_antennatype = true; 10640 10641 if (has_antennatype) { 10642 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr); 10643 if (err) 10644 return err; 10645 } 10646 return 0; 10647 } 10648 10649 static void dprc_exit(void) 10650 { 10651 if (has_antennatype) 10652 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr); 10653 } 10654 10655 static struct ibm_struct dprc_driver_data = { 10656 .name = "dprc", 10657 .exit = dprc_exit, 10658 }; 10659 10660 /**************************************************************************** 10661 **************************************************************************** 10662 * 10663 * Infrastructure 10664 * 10665 **************************************************************************** 10666 ****************************************************************************/ 10667 10668 /* 10669 * HKEY event callout for other subdrivers go here 10670 * (yes, it is ugly, but it is quick, safe, and gets the job done 10671 */ 10672 static void tpacpi_driver_event(const unsigned int hkey_event) 10673 { 10674 if (ibm_backlight_device) { 10675 switch (hkey_event) { 10676 case TP_HKEY_EV_BRGHT_UP: 10677 case TP_HKEY_EV_BRGHT_DOWN: 10678 tpacpi_brightness_notify_change(); 10679 } 10680 } 10681 if (alsa_card) { 10682 switch (hkey_event) { 10683 case TP_HKEY_EV_VOL_UP: 10684 case TP_HKEY_EV_VOL_DOWN: 10685 case TP_HKEY_EV_VOL_MUTE: 10686 volume_alsa_notify_change(); 10687 } 10688 } 10689 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 10690 enum led_brightness brightness; 10691 10692 mutex_lock(&kbdlight_mutex); 10693 10694 /* 10695 * Check the brightness actually changed, setting the brightness 10696 * through kbdlight_set_level() also triggers this event. 10697 */ 10698 brightness = kbdlight_sysfs_get(NULL); 10699 if (kbdlight_brightness != brightness) { 10700 kbdlight_brightness = brightness; 10701 led_classdev_notify_brightness_hw_changed( 10702 &tpacpi_led_kbdlight.led_classdev, brightness); 10703 } 10704 10705 mutex_unlock(&kbdlight_mutex); 10706 } 10707 10708 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 10709 lapsensor_refresh(); 10710 /* If we are already accessing DYTC then skip dytc update */ 10711 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 10712 dytc_profile_refresh(); 10713 } 10714 } 10715 10716 static void hotkey_driver_event(const unsigned int scancode) 10717 { 10718 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 10719 } 10720 10721 /* --------------------------------------------------------------------- */ 10722 10723 /* /proc support */ 10724 static struct proc_dir_entry *proc_dir; 10725 10726 /* 10727 * Module and infrastructure proble, init and exit handling 10728 */ 10729 10730 static bool force_load; 10731 10732 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 10733 static const char * __init str_supported(int is_supported) 10734 { 10735 static char text_unsupported[] __initdata = "not supported"; 10736 10737 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10738 } 10739 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10740 10741 static void ibm_exit(struct ibm_struct *ibm) 10742 { 10743 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10744 10745 list_del_init(&ibm->all_drivers); 10746 10747 if (ibm->flags.acpi_notify_installed) { 10748 dbg_printk(TPACPI_DBG_EXIT, 10749 "%s: acpi_remove_notify_handler\n", ibm->name); 10750 BUG_ON(!ibm->acpi); 10751 acpi_remove_notify_handler(*ibm->acpi->handle, 10752 ibm->acpi->type, 10753 dispatch_acpi_notify); 10754 ibm->flags.acpi_notify_installed = 0; 10755 } 10756 10757 if (ibm->flags.proc_created) { 10758 dbg_printk(TPACPI_DBG_EXIT, 10759 "%s: remove_proc_entry\n", ibm->name); 10760 remove_proc_entry(ibm->name, proc_dir); 10761 ibm->flags.proc_created = 0; 10762 } 10763 10764 if (ibm->flags.acpi_driver_registered) { 10765 dbg_printk(TPACPI_DBG_EXIT, 10766 "%s: acpi_bus_unregister_driver\n", ibm->name); 10767 BUG_ON(!ibm->acpi); 10768 acpi_bus_unregister_driver(ibm->acpi->driver); 10769 kfree(ibm->acpi->driver); 10770 ibm->acpi->driver = NULL; 10771 ibm->flags.acpi_driver_registered = 0; 10772 } 10773 10774 if (ibm->flags.init_called && ibm->exit) { 10775 ibm->exit(); 10776 ibm->flags.init_called = 0; 10777 } 10778 10779 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10780 } 10781 10782 static int __init ibm_init(struct ibm_init_struct *iibm) 10783 { 10784 int ret; 10785 struct ibm_struct *ibm = iibm->data; 10786 struct proc_dir_entry *entry; 10787 10788 BUG_ON(ibm == NULL); 10789 10790 INIT_LIST_HEAD(&ibm->all_drivers); 10791 10792 if (ibm->flags.experimental && !experimental) 10793 return 0; 10794 10795 dbg_printk(TPACPI_DBG_INIT, 10796 "probing for %s\n", ibm->name); 10797 10798 if (iibm->init) { 10799 ret = iibm->init(iibm); 10800 if (ret > 0) 10801 return 0; /* probe failed */ 10802 if (ret) 10803 return ret; 10804 10805 ibm->flags.init_called = 1; 10806 } 10807 10808 if (ibm->acpi) { 10809 if (ibm->acpi->hid) { 10810 ret = register_tpacpi_subdriver(ibm); 10811 if (ret) 10812 goto err_out; 10813 } 10814 10815 if (ibm->acpi->notify) { 10816 ret = setup_acpi_notify(ibm); 10817 if (ret == -ENODEV) { 10818 pr_notice("disabling subdriver %s\n", 10819 ibm->name); 10820 ret = 0; 10821 goto err_out; 10822 } 10823 if (ret < 0) 10824 goto err_out; 10825 } 10826 } 10827 10828 dbg_printk(TPACPI_DBG_INIT, 10829 "%s installed\n", ibm->name); 10830 10831 if (ibm->read) { 10832 umode_t mode = iibm->base_procfs_mode; 10833 10834 if (!mode) 10835 mode = S_IRUGO; 10836 if (ibm->write) 10837 mode |= S_IWUSR; 10838 entry = proc_create_data(ibm->name, mode, proc_dir, 10839 &dispatch_proc_ops, ibm); 10840 if (!entry) { 10841 pr_err("unable to create proc entry %s\n", ibm->name); 10842 ret = -ENODEV; 10843 goto err_out; 10844 } 10845 ibm->flags.proc_created = 1; 10846 } 10847 10848 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10849 10850 return 0; 10851 10852 err_out: 10853 dbg_printk(TPACPI_DBG_INIT, 10854 "%s: at error exit path with result %d\n", 10855 ibm->name, ret); 10856 10857 ibm_exit(ibm); 10858 return (ret < 0) ? ret : 0; 10859 } 10860 10861 /* Probing */ 10862 10863 static char __init tpacpi_parse_fw_id(const char * const s, 10864 u32 *model, u16 *release) 10865 { 10866 int i; 10867 10868 if (!s || strlen(s) < 8) 10869 goto invalid; 10870 10871 for (i = 0; i < 8; i++) 10872 if (!((s[i] >= '0' && s[i] <= '9') || 10873 (s[i] >= 'A' && s[i] <= 'Z'))) 10874 goto invalid; 10875 10876 /* 10877 * Most models: xxyTkkWW (#.##c) 10878 * Ancient 570/600 and -SL lacks (#.##c) 10879 */ 10880 if (s[3] == 'T' || s[3] == 'N') { 10881 *model = TPID(s[0], s[1]); 10882 *release = TPVER(s[4], s[5]); 10883 return s[2]; 10884 10885 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10886 } else if (s[4] == 'T' || s[4] == 'N') { 10887 *model = TPID3(s[0], s[1], s[2]); 10888 *release = TPVER(s[5], s[6]); 10889 return s[3]; 10890 } 10891 10892 invalid: 10893 return '\0'; 10894 } 10895 10896 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10897 { 10898 char *ec_fw_string = (char *) private; 10899 const char *dmi_data = (const char *)dm; 10900 /* 10901 * ThinkPad Embedded Controller Program Table on newer models 10902 * 10903 * Offset | Name | Width | Description 10904 * ---------------------------------------------------- 10905 * 0x00 | Type | BYTE | 0x8C 10906 * 0x01 | Length | BYTE | 10907 * 0x02 | Handle | WORD | Varies 10908 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10909 * 0x0A | OEM struct offset | BYTE | 0x0B 10910 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10911 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10912 * 0x0D | ECP version ID | STR ID | 10913 * 0x0E | ECP release date | STR ID | 10914 */ 10915 10916 /* Return if data structure not match */ 10917 if (dm->type != 140 || dm->length < 0x0F || 10918 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10919 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10920 dmi_data[0x0C] != 0x01) 10921 return; 10922 10923 /* fwstr is the first 8byte string */ 10924 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10925 } 10926 10927 /* returns 0 - probe ok, or < 0 - probe error. 10928 * Probe ok doesn't mean thinkpad found. 10929 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10930 static int __must_check __init get_thinkpad_model_data( 10931 struct thinkpad_id_data *tp) 10932 { 10933 const struct dmi_device *dev = NULL; 10934 char ec_fw_string[18] = {0}; 10935 char const *s; 10936 char t; 10937 10938 if (!tp) 10939 return -EINVAL; 10940 10941 memset(tp, 0, sizeof(*tp)); 10942 10943 if (dmi_name_in_vendors("IBM")) 10944 tp->vendor = PCI_VENDOR_ID_IBM; 10945 else if (dmi_name_in_vendors("LENOVO")) 10946 tp->vendor = PCI_VENDOR_ID_LENOVO; 10947 else 10948 return 0; 10949 10950 s = dmi_get_system_info(DMI_BIOS_VERSION); 10951 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10952 if (s && !tp->bios_version_str) 10953 return -ENOMEM; 10954 10955 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10956 t = tpacpi_parse_fw_id(tp->bios_version_str, 10957 &tp->bios_model, &tp->bios_release); 10958 if (t != 'E' && t != 'C') 10959 return 0; 10960 10961 /* 10962 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10963 * X32 or newer, all Z series; Some models must have an 10964 * up-to-date BIOS or they will not be detected. 10965 * 10966 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10967 */ 10968 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10969 if (sscanf(dev->name, 10970 "IBM ThinkPad Embedded Controller -[%17c", 10971 ec_fw_string) == 1) { 10972 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10973 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10974 break; 10975 } 10976 } 10977 10978 /* Newer ThinkPads have different EC program info table */ 10979 if (!ec_fw_string[0]) 10980 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10981 10982 if (ec_fw_string[0]) { 10983 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10984 if (!tp->ec_version_str) 10985 return -ENOMEM; 10986 10987 t = tpacpi_parse_fw_id(ec_fw_string, 10988 &tp->ec_model, &tp->ec_release); 10989 if (t != 'H') { 10990 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10991 ec_fw_string); 10992 pr_notice("please report this to %s\n", TPACPI_MAIL); 10993 } 10994 } 10995 10996 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10997 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10998 tp->model_str = kstrdup(s, GFP_KERNEL); 10999 if (!tp->model_str) 11000 return -ENOMEM; 11001 } else { 11002 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11003 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11004 tp->model_str = kstrdup(s, GFP_KERNEL); 11005 if (!tp->model_str) 11006 return -ENOMEM; 11007 } 11008 } 11009 11010 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11011 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11012 if (s && !tp->nummodel_str) 11013 return -ENOMEM; 11014 11015 return 0; 11016 } 11017 11018 static int __init probe_for_thinkpad(void) 11019 { 11020 int is_thinkpad; 11021 11022 if (acpi_disabled) 11023 return -ENODEV; 11024 11025 /* It would be dangerous to run the driver in this case */ 11026 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11027 return -ENODEV; 11028 11029 /* 11030 * Non-ancient models have better DMI tagging, but very old models 11031 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11032 */ 11033 is_thinkpad = (thinkpad_id.model_str != NULL) || 11034 (thinkpad_id.ec_model != 0) || 11035 tpacpi_is_fw_known(); 11036 11037 /* The EC handler is required */ 11038 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11039 if (!ec_handle) { 11040 if (is_thinkpad) 11041 pr_err("Not yet supported ThinkPad detected!\n"); 11042 return -ENODEV; 11043 } 11044 11045 if (!is_thinkpad && !force_load) 11046 return -ENODEV; 11047 11048 return 0; 11049 } 11050 11051 static void __init thinkpad_acpi_init_banner(void) 11052 { 11053 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11054 pr_info("%s\n", TPACPI_URL); 11055 11056 pr_info("ThinkPad BIOS %s, EC %s\n", 11057 (thinkpad_id.bios_version_str) ? 11058 thinkpad_id.bios_version_str : "unknown", 11059 (thinkpad_id.ec_version_str) ? 11060 thinkpad_id.ec_version_str : "unknown"); 11061 11062 BUG_ON(!thinkpad_id.vendor); 11063 11064 if (thinkpad_id.model_str) 11065 pr_info("%s %s, model %s\n", 11066 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11067 "IBM" : ((thinkpad_id.vendor == 11068 PCI_VENDOR_ID_LENOVO) ? 11069 "Lenovo" : "Unknown vendor"), 11070 thinkpad_id.model_str, 11071 (thinkpad_id.nummodel_str) ? 11072 thinkpad_id.nummodel_str : "unknown"); 11073 } 11074 11075 /* Module init, exit, parameters */ 11076 11077 static struct ibm_init_struct ibms_init[] __initdata = { 11078 { 11079 .data = &thinkpad_acpi_driver_data, 11080 }, 11081 { 11082 .init = hotkey_init, 11083 .data = &hotkey_driver_data, 11084 }, 11085 { 11086 .init = bluetooth_init, 11087 .data = &bluetooth_driver_data, 11088 }, 11089 { 11090 .init = wan_init, 11091 .data = &wan_driver_data, 11092 }, 11093 { 11094 .init = uwb_init, 11095 .data = &uwb_driver_data, 11096 }, 11097 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11098 { 11099 .init = video_init, 11100 .base_procfs_mode = S_IRUSR, 11101 .data = &video_driver_data, 11102 }, 11103 #endif 11104 { 11105 .init = kbdlight_init, 11106 .data = &kbdlight_driver_data, 11107 }, 11108 { 11109 .init = light_init, 11110 .data = &light_driver_data, 11111 }, 11112 { 11113 .init = cmos_init, 11114 .data = &cmos_driver_data, 11115 }, 11116 { 11117 .init = led_init, 11118 .data = &led_driver_data, 11119 }, 11120 { 11121 .init = beep_init, 11122 .data = &beep_driver_data, 11123 }, 11124 { 11125 .init = thermal_init, 11126 .data = &thermal_driver_data, 11127 }, 11128 { 11129 .init = brightness_init, 11130 .data = &brightness_driver_data, 11131 }, 11132 { 11133 .init = volume_init, 11134 .data = &volume_driver_data, 11135 }, 11136 { 11137 .init = fan_init, 11138 .data = &fan_driver_data, 11139 }, 11140 { 11141 .init = mute_led_init, 11142 .data = &mute_led_driver_data, 11143 }, 11144 { 11145 .init = tpacpi_battery_init, 11146 .data = &battery_driver_data, 11147 }, 11148 { 11149 .init = tpacpi_lcdshadow_init, 11150 .data = &lcdshadow_driver_data, 11151 }, 11152 { 11153 .init = tpacpi_proxsensor_init, 11154 .data = &proxsensor_driver_data, 11155 }, 11156 { 11157 .init = tpacpi_dytc_profile_init, 11158 .data = &dytc_profile_driver_data, 11159 }, 11160 { 11161 .init = tpacpi_kbdlang_init, 11162 .data = &kbdlang_driver_data, 11163 }, 11164 { 11165 .init = tpacpi_dprc_init, 11166 .data = &dprc_driver_data, 11167 }, 11168 }; 11169 11170 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11171 { 11172 unsigned int i; 11173 struct ibm_struct *ibm; 11174 11175 if (!kp || !kp->name || !val) 11176 return -EINVAL; 11177 11178 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11179 ibm = ibms_init[i].data; 11180 WARN_ON(ibm == NULL); 11181 11182 if (!ibm || !ibm->name) 11183 continue; 11184 11185 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11186 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11187 return -ENOSPC; 11188 strcpy(ibms_init[i].param, val); 11189 return 0; 11190 } 11191 } 11192 11193 return -EINVAL; 11194 } 11195 11196 module_param(experimental, int, 0444); 11197 MODULE_PARM_DESC(experimental, 11198 "Enables experimental features when non-zero"); 11199 11200 module_param_named(debug, dbg_level, uint, 0); 11201 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11202 11203 module_param(force_load, bool, 0444); 11204 MODULE_PARM_DESC(force_load, 11205 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11206 11207 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11208 MODULE_PARM_DESC(fan_control, 11209 "Enables setting fan parameters features when true"); 11210 11211 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11212 MODULE_PARM_DESC(brightness_mode, 11213 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11214 11215 module_param(brightness_enable, uint, 0444); 11216 MODULE_PARM_DESC(brightness_enable, 11217 "Enables backlight control when 1, disables when 0"); 11218 11219 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11220 module_param_named(volume_mode, volume_mode, uint, 0444); 11221 MODULE_PARM_DESC(volume_mode, 11222 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11223 11224 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11225 MODULE_PARM_DESC(volume_capabilities, 11226 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11227 11228 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11229 MODULE_PARM_DESC(volume_control, 11230 "Enables software override for the console audio control when true"); 11231 11232 module_param_named(software_mute, software_mute_requested, bool, 0444); 11233 MODULE_PARM_DESC(software_mute, 11234 "Request full software mute control"); 11235 11236 /* ALSA module API parameters */ 11237 module_param_named(index, alsa_index, int, 0444); 11238 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11239 module_param_named(id, alsa_id, charp, 0444); 11240 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11241 module_param_named(enable, alsa_enable, bool, 0444); 11242 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11243 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11244 11245 /* The module parameter can't be read back, that's why 0 is used here */ 11246 #define TPACPI_PARAM(feature) \ 11247 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11248 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11249 11250 TPACPI_PARAM(hotkey); 11251 TPACPI_PARAM(bluetooth); 11252 TPACPI_PARAM(video); 11253 TPACPI_PARAM(light); 11254 TPACPI_PARAM(cmos); 11255 TPACPI_PARAM(led); 11256 TPACPI_PARAM(beep); 11257 TPACPI_PARAM(brightness); 11258 TPACPI_PARAM(volume); 11259 TPACPI_PARAM(fan); 11260 11261 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11262 module_param(dbg_wlswemul, uint, 0444); 11263 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11264 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11265 MODULE_PARM_DESC(wlsw_state, 11266 "Initial state of the emulated WLSW switch"); 11267 11268 module_param(dbg_bluetoothemul, uint, 0444); 11269 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11270 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11271 MODULE_PARM_DESC(bluetooth_state, 11272 "Initial state of the emulated bluetooth switch"); 11273 11274 module_param(dbg_wwanemul, uint, 0444); 11275 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11276 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11277 MODULE_PARM_DESC(wwan_state, 11278 "Initial state of the emulated WWAN switch"); 11279 11280 module_param(dbg_uwbemul, uint, 0444); 11281 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11282 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11283 MODULE_PARM_DESC(uwb_state, 11284 "Initial state of the emulated UWB switch"); 11285 #endif 11286 11287 static void thinkpad_acpi_module_exit(void) 11288 { 11289 struct ibm_struct *ibm, *itmp; 11290 11291 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11292 11293 list_for_each_entry_safe_reverse(ibm, itmp, 11294 &tpacpi_all_drivers, 11295 all_drivers) { 11296 ibm_exit(ibm); 11297 } 11298 11299 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11300 11301 if (tpacpi_inputdev) { 11302 if (tp_features.input_device_registered) 11303 input_unregister_device(tpacpi_inputdev); 11304 else 11305 input_free_device(tpacpi_inputdev); 11306 kfree(hotkey_keycode_map); 11307 } 11308 11309 if (tpacpi_hwmon) 11310 hwmon_device_unregister(tpacpi_hwmon); 11311 11312 if (tpacpi_sensors_pdev) 11313 platform_device_unregister(tpacpi_sensors_pdev); 11314 if (tpacpi_pdev) 11315 platform_device_unregister(tpacpi_pdev); 11316 11317 if (tp_features.sensors_pdrv_attrs_registered) 11318 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 11319 if (tp_features.platform_drv_attrs_registered) 11320 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 11321 11322 if (tp_features.sensors_pdrv_registered) 11323 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11324 11325 if (tp_features.platform_drv_registered) 11326 platform_driver_unregister(&tpacpi_pdriver); 11327 11328 if (proc_dir) 11329 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11330 11331 if (tpacpi_wq) 11332 destroy_workqueue(tpacpi_wq); 11333 11334 kfree(thinkpad_id.bios_version_str); 11335 kfree(thinkpad_id.ec_version_str); 11336 kfree(thinkpad_id.model_str); 11337 kfree(thinkpad_id.nummodel_str); 11338 } 11339 11340 11341 static int __init thinkpad_acpi_module_init(void) 11342 { 11343 int ret, i; 11344 11345 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11346 11347 /* Driver-level probe */ 11348 11349 ret = get_thinkpad_model_data(&thinkpad_id); 11350 if (ret) { 11351 pr_err("unable to get DMI data: %d\n", ret); 11352 thinkpad_acpi_module_exit(); 11353 return ret; 11354 } 11355 ret = probe_for_thinkpad(); 11356 if (ret) { 11357 thinkpad_acpi_module_exit(); 11358 return ret; 11359 } 11360 11361 /* Driver initialization */ 11362 11363 thinkpad_acpi_init_banner(); 11364 tpacpi_check_outdated_fw(); 11365 11366 TPACPI_ACPIHANDLE_INIT(ecrd); 11367 TPACPI_ACPIHANDLE_INIT(ecwr); 11368 11369 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11370 if (!tpacpi_wq) { 11371 thinkpad_acpi_module_exit(); 11372 return -ENOMEM; 11373 } 11374 11375 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11376 if (!proc_dir) { 11377 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11378 thinkpad_acpi_module_exit(); 11379 return -ENODEV; 11380 } 11381 11382 ret = platform_driver_register(&tpacpi_pdriver); 11383 if (ret) { 11384 pr_err("unable to register main platform driver\n"); 11385 thinkpad_acpi_module_exit(); 11386 return ret; 11387 } 11388 tp_features.platform_drv_registered = 1; 11389 11390 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11391 if (ret) { 11392 pr_err("unable to register hwmon platform driver\n"); 11393 thinkpad_acpi_module_exit(); 11394 return ret; 11395 } 11396 tp_features.sensors_pdrv_registered = 1; 11397 11398 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 11399 if (!ret) { 11400 tp_features.platform_drv_attrs_registered = 1; 11401 ret = tpacpi_create_driver_attributes( 11402 &tpacpi_hwmon_pdriver.driver); 11403 } 11404 if (ret) { 11405 pr_err("unable to create sysfs driver attributes\n"); 11406 thinkpad_acpi_module_exit(); 11407 return ret; 11408 } 11409 tp_features.sensors_pdrv_attrs_registered = 1; 11410 11411 11412 /* Device initialization */ 11413 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 11414 NULL, 0); 11415 if (IS_ERR(tpacpi_pdev)) { 11416 ret = PTR_ERR(tpacpi_pdev); 11417 tpacpi_pdev = NULL; 11418 pr_err("unable to register platform device\n"); 11419 thinkpad_acpi_module_exit(); 11420 return ret; 11421 } 11422 tpacpi_sensors_pdev = platform_device_register_simple( 11423 TPACPI_HWMON_DRVR_NAME, 11424 -1, NULL, 0); 11425 if (IS_ERR(tpacpi_sensors_pdev)) { 11426 ret = PTR_ERR(tpacpi_sensors_pdev); 11427 tpacpi_sensors_pdev = NULL; 11428 pr_err("unable to register hwmon platform device\n"); 11429 thinkpad_acpi_module_exit(); 11430 return ret; 11431 } 11432 tp_features.sensors_pdev_attrs_registered = 1; 11433 tpacpi_hwmon = hwmon_device_register_with_groups( 11434 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 11435 11436 if (IS_ERR(tpacpi_hwmon)) { 11437 ret = PTR_ERR(tpacpi_hwmon); 11438 tpacpi_hwmon = NULL; 11439 pr_err("unable to register hwmon device\n"); 11440 thinkpad_acpi_module_exit(); 11441 return ret; 11442 } 11443 mutex_init(&tpacpi_inputdev_send_mutex); 11444 tpacpi_inputdev = input_allocate_device(); 11445 if (!tpacpi_inputdev) { 11446 thinkpad_acpi_module_exit(); 11447 return -ENOMEM; 11448 } else { 11449 /* Prepare input device, but don't register */ 11450 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11451 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11452 tpacpi_inputdev->id.bustype = BUS_HOST; 11453 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11454 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11455 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11456 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11457 } 11458 11459 /* Init subdriver dependencies */ 11460 tpacpi_detect_brightness_capabilities(); 11461 11462 /* Init subdrivers */ 11463 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11464 ret = ibm_init(&ibms_init[i]); 11465 if (ret >= 0 && *ibms_init[i].param) 11466 ret = ibms_init[i].data->write(ibms_init[i].param); 11467 if (ret < 0) { 11468 thinkpad_acpi_module_exit(); 11469 return ret; 11470 } 11471 } 11472 11473 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11474 11475 ret = input_register_device(tpacpi_inputdev); 11476 if (ret < 0) { 11477 pr_err("unable to register input device\n"); 11478 thinkpad_acpi_module_exit(); 11479 return ret; 11480 } else { 11481 tp_features.input_device_registered = 1; 11482 } 11483 11484 return 0; 11485 } 11486 11487 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11488 11489 /* 11490 * This will autoload the driver in almost every ThinkPad 11491 * in widespread use. 11492 * 11493 * Only _VERY_ old models, like the 240, 240x and 570 lack 11494 * the HKEY event interface. 11495 */ 11496 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11497 11498 /* 11499 * DMI matching for module autoloading 11500 * 11501 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11502 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11503 * 11504 * Only models listed in thinkwiki will be supported, so add yours 11505 * if it is not there yet. 11506 */ 11507 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11508 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11509 11510 /* Ancient thinkpad BIOSes have to be identified by 11511 * BIOS type or model number, and there are far less 11512 * BIOS types than model numbers... */ 11513 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11514 11515 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11516 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11517 MODULE_DESCRIPTION(TPACPI_DESC); 11518 MODULE_VERSION(TPACPI_VERSION); 11519 MODULE_LICENSE("GPL"); 11520 11521 module_init(thinkpad_acpi_module_init); 11522 module_exit(thinkpad_acpi_module_exit); 11523